Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

Organs are composed of tissues, which are in turn composed of cells. Plants have three TISSUE types: ground, DERMAL, and VASCULAR. Animals have four: EPITHELIAL, connective, muscle, and BONE.

Explanation:

Sclerenchyma cells are strong, THICK cells that provide most of the support in a plant. They are KNOWN to have extremely thick cell walls and do not participate in MANY of the other activities of the developing plant, such as photosynthesis, because their focus is STRICTLY on support and structure.

Answer:

2. bryophyta

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ANSWER:

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Explanation:

Human fertilization and development. Fertilization is the process in which haploid gametes FUSE to form a DIPLOID cell called a zygote. To ensure that each zygote has the CORRECT NUMBER of chromosomes, only one sperm can fuse with one egg.

Explanation:

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★ Maltose is also known as maltobiose

★ Its a malt sugar

★it is also a disaccharide

★It consists of two TYPES molecules of GLUCOSE in α-(1,4) GLYCOSIDIC linkage.

★Maltose is created by the breakdown of starch

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★its a basic ionic salt of an alkali metal.

★That is S-block elements

★Any solution in which pH value is greater than 7.0. of a soluble base.

★ Alkaline is basicaly an aqueous solution whose pH value is greater than 7.

or

★ Any aqueous solution in which the [OH-] ion concentration is greater than .

● Corpus luteum is a mass of CELLS which is responsible for the release of HORMONE called progesterone during the early stages of pregnancy.

● the function of the Corpus luteum is specified BASED on the the occurrence of fertilization.

● Corpus albicans is the scar formed in the ovary after The breakdown of the Corpus luteum by the action of macrophages.

● Corpus albicans is a WHITE body formed of connective TISSUE.

It is GLUCOSE PHOSPHATE in GLYCOLYSIS

Answer:

Girls' bodies INCREASE in SIZE and shape during puberty. Their hips become more rounded and they get a more DEFINED waist. The vulva, vagina and nipples get bigger and the breasts BEGIN to develop, sometimes unevenly.

ANSWER:

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ANSWER: parthenium is a TYPE of weed.so FARMERS USE WEEDICIDES or remove it by hand.

ANSWER:

EDIBLE part of mushroom is (a) Basidiocarp (B) Primary MYCELIUM (c) Basidiospores (d) Fungal HYPHAE.

Answer: in mountains due HIGH temperature in high altitudes PEOPLE GET GOITRE.

Answer:

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Explanation:

Fertilization, union of a spermatozoal nucleus, of paternal origin, with an egg nucleus, of MATERNAL origin, to form the primary nucleus of an embryo. In all ORGANISMS the essence of fertilization is, in fact, the fusion of the hereditary material of two DIFFERENT SEX cells, or gametes, each of which carries half the NUMBER of chromosomes typical of the species. The most primitive form of fertilization, found in microorganisms and protozoans, consists of an exchange of genetic material between two cells.

ANSWER:

by ACTIVE and PASSIVE transport.

diffusion, OSMOSIS, ETC

. LYSOSOME enzymes are made by proteins from the endoplasmic reticulum and ENCLOSED within VESICLES by the Golgi apparatus. Lysosomes are formed by BUDDING from the Golgi complex.

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Answer:

4) yeast

Explanation:

PROTEOLYSIS is the BREAKDOWN of PROTEINS into smaller polypeptides or amino acids. Uncatalysed, the hydrolysis of peptide bonds is extremely slow, taking HUNDREDS of years. ... Consequently, dis-regulation of proteolysis can CAUSE disease and is used by some venoms.

Answer:

Explanation:

It is converted into glucose

Hydrogen is ADDED

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EXPLANATION:

vascular tissue. XYLEM transports and stores WATER and water-soluble nutrients in vascular plants. Phloem is RESPONSIBLE for TRANSPORTING sugars, proteins, and other organic molecules in plants.

ANSWER:

because SALT ACT as a PRESERVATIVE

Answer:

answer 1

BEES give HONEY and honey can ALSO be selled to EARN money

bees help in the process of polination also

answer 2

India is situated in the continent of Asia. It lies completely in the Northern HEMISPHERE and Eastern hemisphere between latitudes 84′ N and 37°6’N and longitudes 68°7′ E and 97°25′ E.

India is divided by Tropic of CANCER 23°30′ N in almost TWO equal parts. The upper half has a temperate cooler CLIMATE and the lower half has a tropical climate. ....

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ANSWER:

RICE: RAINY SEASON

wheat:winter

cotton:wet summer season

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The concept of cognitive structure in humans is central to PIAGET's theory. Cognitive structures are patterns of physical or mental action that underlie specific acts of intelligence. ... ACCORDING to Piaget there are two processes at work in cognitive development: assimilation and ACCOMMODATION.

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Wetland RESTORATION is the manipulation of a former or degraded wetland's physical, chemical, or biological characteristics to return its natural functions. Restoration practices include: Re-establishment, the rebuilding a former wetland

America's Wetlands. Wetlands are areas where water covers soil all or PART of the time. Wetlands are important because they protect and improve water quality, PROVIDE fish and wildlife habitats, store FLOODWATERS and maintain surface water flow during dry PERIODS

ENDOSMOSIS

●The solvent MOVES into the cell

(Endo = inside)

●Osmosis towards the inside of a cell

●Occurs when there is lower osmotic pressure

●Hypotonic solutions induce endosmosis in cells (distilled water is hypotonic because it contains no solute)

●Higher water POTENTIAL of the surrounding areas when compared to the cytosol (watery part of a cytoplasm in a cell)

●Cells swell as result

●Example: RAISINS swell when placed in normal water

EXOSMOSIS

●The solvent moves out of the cell

(Exo = OUTSIDE)

●Osmosis towards the outside of a cell

●Occurs when the osmotic pressure is higher

●Hypertonic solutions induce exosmosis in cells (Intravenous Fluid is often hypertonic as it has many solutes)

●Lower water potential of the surrounding areas when compared to the cytosol

●Cells shrink as result

●Example: Raisins SHRIVEL when placed in concentrated salt solution

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SAPROPHYTES. a PLANTS that lives ans depend on dead and DECAYING parts of an orhanisms.

Green plants are those which MAKE their own food by photosynthesis.

Answer:

ANTHRAX a skin disease is CAUSED by Bacillus ANTHRACIS.

when we INHALE oxygen COME into lugns through trackia then it goes into Broncos which further DIVIDED into alveoli which is a small BAG like structure in which gaseous EXCHANGE occurs.

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Explanation:

To prepare a stained, temporary mount of onion peel and to study its cells.

Theory

All living organisms are composed of cells. New cells arise by the division of pre-existing cells. Cell is the structural and functional unit of life. In plants, cells have an outermost rigid cell wall beneath which is a cell membrane. The cell membrane encloses cytoplasm, cell organelles, and a nucleus.

Materials Required

An onion bulb, slides, cover slips, two watch glasses, needle, brush, FORCEPS, razor blade, compound MICROSCOPE, blotting paper, methylene blue solution (or safranin), glycerine, and water.

Procedure

Step 1: One fleshy scale leaf of an onion is taken. It is broken into two and a thin membranous peel is pulled out using a forcep adhering to the inner surface of the leaf. This is the epidermal peel.

Step 2: The peel is placed in a watch glass CONTAINING water and is CUT into small rectangular pieces.

Step 3: 1 or 2 drops of methylene blue or safrarin is mixed in a small quantity of water taken in another watch glass. The peel is transfered into it. Peels are leave for about 3 minutes. The peel is dipped in water to remove excess stain.

Step 4: Clean slide is taken with a drop of glycerine in the middle and a brush is used to transfer the washed and stained peel on to it.

Step 5: Cover slip is placed over it by slowly lowering it with a needle. Avoid ENTRY of air bubbles.

Step 6: Excess glycerine is removed from the edges of cover slip with the help of a piece of blotting paper.

Step 7: The slide is observed under the microscope, first in low power and then in high power.

Step 8: A labelled diagram of the cells is drawn as seen under microscope.

Answer:

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During the copulation, male release about 3.5 ml of seminal fluid into the female body . This process is called ejaculation or insemination seminal fluid contains as many as 200-300 million sperms.This ensures the reaching of number of sperms to the ovum as many sperm are killed by acidity of female genital tract and many sperms are engulfed by the phagocytes of vaginal epithelium so that only about 100 sperms reach the fallopian tube.

The sperms swims in the seminal fluid by lashing movements of their tail at the rate of 1-4 mm per minute. The sperms swim towards the fallopian tube through the uterus. It is aided by the aspiratory action of the uterus and peristaltic movements of the fallopian tube. Capacitation is the phenomenon of physiological maturation of sperms inside the female genital tract. It occurs in the presence of a Viscous fluid SECRETED from the secretory cell of epithelial lining of oviducal MUCOSA. It takes about 5-6 hours. it involves the following changes :--

➡️ loss of decapacitation

➡️Calcium influx into the sperms

➡️sperms FLAGELLAR movements changes from undulatory to whiplash type.

Fertilisation and viability of gametes are limited varying from a few minutes to few hours or days. The fertilisation of human sperm in female genital tract is about 48 hours while its survival value is upto 2-3 days. secondly the ovum is non motile and the energy content of sperm are also very low so the sperm must approach the egg as QUICKLY as possible. Fertilizability period of ovum is only 24 hours though it can live for about 72 hours.

To thin out the number of sperms, the ovum secretes a chemical SUBSTANCE called fertilizin, which has a number of spermophillic sites on its surface where the sperms of the species specific type can be bound by their antifertilizin sites. This fertilizin - antifertilizin reaction is highly species specific reaction. The main aim of this reaction is to to thin out the number of sperms to reduce the chance of polysermy.

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●Yes, BUTTERFLIES are TERRESTRIAL.

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ANSWER:

the STEPS are AVAILABLE on GOOGLE POINTWISE

ANSWER:

PLACENTA HELPS in this WORK

Answer:

it is a plant tissue of THIN walled compactly arranged immature cells that have the potential to divide and form NEW cells. MERISTAMATIC tissue is also called meristem. Its cells are called meristamatic cells.The region where meristem is present can function as growth region. New cells produced by a meristem are initially like meristamatic cells. Slowly ,they grow,differentiate and mature into components of various permanent tissues

Characteristics of Meristamatic Cells

1. Shape and size:the cells are small,spherical or polygonal in outline.
2. cell wall:it is celluloid,thin and elastic
3. Intercellular space:they are absent . the cells are compactly arranged
4. Cell contents:nucleus is large,cytoplasm is dense,vacuous are absent or very small.
5. Activity :respiration is rapid ,there is high SYNTHETIC activity,FOOD supply is high but food is not stored ,meristamatic cells grow and divide repeatedly ..I Hope This Would Help You

ANSWER:

DIFFUSION or Osmosis

Explanation:

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Rhizoids are NEARLY lacking in aquatic forms, but there are usually numerous unicellular rhizoids of TWO types on the ventral surface. ONE type is called smooth and the other type is the pegged or tuberculated rhizoids; these help in anchorage and absorption.

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Answer:

Fine HAIR and mucus ACT as the first line of DEFENSE in the nasal PASSAGE. They keep foreign particles that could cause illness from entering the body. The hairs (cilia) and mucus along the nasal cavity are responsible for trapping dust and other particles in the air you inhale and SWEEPING it out again.

FLOATING is CORRECT ANSWER

Answer:

People with diabetes are at higher risk of developing ATHEROSCLEROSIS, the most common cause of PERIPHERAL ARTERY disease (PAD). ... Fatty deposits build up in the inner linings of the artery walls of the legs, making them narrower, hindering blood FLOW and can even stop blood flow to the legs and FEET completely.

Explanation:

Ans1. In multicellular PLANTS and animals, however, meiosis is restricted to the germs cells, where it is key to sexual reproduction where as somatic cells UNDERGO MITOSIS to proliferate the

germs cells undergo meiosis to produce haploid gametes.

Ans 2. In meiosis 1 ,homologue chromosomes separate, while in meiosis 2 , sister chromatids separate. Meiosis 2 produce 4 haploid daughter cells, whereas meiosis 1 produce 2 diploid daughter cells.

Answer:

Reproductive health implies that people are able to have a responsible, satisfying and safer sex life and that they have the capability to reproduce and the freedom to decide if, when and how often to do so. One interpretation of this implies that men and women ought to be informed of and to have access to SAFE, effective, affordable and acceptable methods of birth control; also access to appropriate health care SERVICES of sexual, reproductive medicine and implementation of health EDUCATION programs to stress the importance of women to GO safely through pregnancy and childbirth could PROVIDE couples with the best chance of having a healthy infant.

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The cartilaginous rings are INCOMPLETE to allow the trachea to collapse slightly so that food can pass down the esophagus. A flap-like epiglottis closes the OPENING to the larynx during swallowing to PREVENT SWALLOWED matter from entering the trachea.

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Osmosis is the MOVEMENT of LIQUID MOLECULES from a higher concentration to a LOWER concentration through a partially premeable MEMBRANE

Answer:

hybridization

Explanation:

crop MANIPULATION breeding TECHNIQUES makes crop IMPROVED

ANSWER:

Sufism has a history in INDIA evolving for over 1,000 years. ... Following the entrance of Islam in the EARLY 8th century, Sufi mystic TRADITIONS became more visible during the 10th and 11th centuries of the Delhi Sultanate and after it to the REST of India.

Explanation:

1. human brain is the largest brain of all vertebrates relative to body size.
2. it weighs about 3.3lbs or 1.5 kg.
3. the brain makes up about 2℅ of human body weight.
4. it contains about 86 millions of nerve cells (neurons) and billions of nerve fibres(axon n DENDRITES).
5. these neurons r CONNECTED by trillions of connections or SYNAPSES.

Pollington is the transfer of pollen grains from anther to stigma of a flower

Pollinating agents include wind, insects, birds etc

Insect pollinated flower

insect pollinated flowers

1. Brightly coloured large petals with fragrance

2. NECTAR produced in NECTARY

3. Anthers lie deep inside the flower

4. Filaments are STRONG and sturdy

5. Pollen grains are large and present in small numbers

6. May have sticky mass helping adherence of insects

7. Stigma lie WITHIN the petals

8. Flowers may be solitary or as inflorescence

9. PLANTS carry bisexual flowers

Wind pollinated flower

wind pollinated flower

1. Dull colored small petals without fragrance

2. No nectar

3. Anthers often seen supported outside the flower

4. Filaments are slender and long

5. Pollen grains are light, minute and in large numbers

6. May be winged for wind transport

7. Feathery stigma borne on long styles

8. Flowers in bunches or as inflorescence

9. Plants are often unisexual with more number of male flowers