22339 + Interview Questions in Biology in Class 11

1.	Question : Uric acid is the main nitrogenous waste in(a) fish(b) amphibians(c) birds(d) mammals
Answer» fish amphibians birds mammals

Discussion

2.	Question : Uric acid is the chief nitrogenous component of the excretory product of ....
Answer» EARTHWORM COCKROACH FROG MAN SOLUTION :Cockroach

Discussion

3.	Question : Ureters and genital ducts are separately open into cloaca in
Answer» MALE FROGS female frogs 1 & 2 NONE of above ANSWER :B

Discussion

4.	Question : Ureters act as urinogenital ducts in
Answer» male frogs FEMALE frogs both 1 & 2 NONE Answer :A

Discussion

5.	Question : Urea synthesis occurs in
Answer» kidney liver brain muscles Answer :B

Discussion

6.	Question : Urea is transformed through ………………………………………
Answer» RBCs WBCs BLOOD PLASMA All of above SOLUTION :blood plasma

Discussion

7.	Question : Urea is formed in which organ of rabbit?
Answer» LIVER kidney spleen lung SOLUTION :liver

Discussion

8.	Question : Urea is directly produced in mammals from
Answer» AMMONIA RELEASED by OXIDATIVE DEAMINATION oxidative deamination of proteins breakdown of ornithine breakdown of ARGININE

Discussion

9.	Question : Uracil is present in RNA at the place of :
Answer» ADENINE GUANINE CYTOSINE THYMINE ANSWER :A

Discussion

10.	Question : upper : scala vestibuli :: lower : ........
Answer» SOLUTION :SCALA TYMPANI

Discussion

11.	Question : Upper part of petiole is modified into tendril in
Answer» Pisum Nepenthes Dolichos CUSCUTA ANSWER :C

Discussion

12.	Question : Upon the oxidation of one mole of pyruvate by mitochondrial respiration, the moles of ATP generated by mitochndrial respiration, the moles of ATP generated are
Answer» 38 30 8 15 Answer :D

Discussion

13.	Question : Upon stimulation of skeletal muscles, calcium is immediately made available for binding to troponin from
Answer» blood lymph sarcoplasmic RETICULUM BONE. SOLUTION :N//A

Discussion

14.	Question : Uphill transport I.e. movement of substances from their lower concentation to their higher concentration occurs in
Answer» simple diffusion facilitated diffusion active transport both `(b)`and `(c)`. Solution :In active transport, the MOVABLE carrier proteins are called pumps. They employ ATP ENERGY for transport across the membrane. It is uphill transport, i.e., against concentration gradient and is faster then passive transport. The rate of active transport reaches the maximum when all the protein pumps are being used in transport (Saturation EFFECT). Carrier proteins are highly specific like ENZYMES. They are also sensitive to inhibitors that react with protein side chains.

Discussion

15.	Question : Unsegmented, worm like animals with proboscis, collar and trunk.
Answer» SOLUTION :HemichordataS

Discussion

16.	Question : Unrelated character regarding Trichomes in the shoot system is
Answer» MULTICELLULAR structures PREVENT in WATER loss Absorbption of water Branched or UNBRANCHED structures Answer :C

Discussion

17.	Question : Unlike primary growth, secondary growth in both roots andstems :
Answer» is indeterminate produces xylem and phloem INVOLVES VASCULAR and CORK cambiums RESULT in a rapid increase in root or stem length Solution :involves vascular and cork cambiums

Discussion

18.	Question : Unlike placental mammals, both monotremes and marsupials:
Answer» LACK nipples have some EMBRYONIC DEVELOPMENT OUTSIDE the mother's uterus lay EGGS are found in Australia and Africa Solution : have some embryonic development outside the mother.s uterus

Discussion

19.	Question : Unlike eukaryotic cells, prokaryotic cells :
Answer» LACK a PLASMA membrane do not have a nucleus have RNA, not DNA all of the above Answer :B

Discussion

20.	Question : Universal smaller sub unit of ribosome is
Answer» 30S 40S 50S 60S Answer :A

Discussion

21.	Question : Universal cell organelles (found in all living cells) are
Answer» RIBOSOMES Plastids Mitochondria VACUOLES ANSWER :A

Discussion

22.	Question : Universal cell organelles are
Answer» Ergosomes Palade granules Peroxysomes (1) and (2) ANSWER :D

Discussion

23.	Question : Units of cuticular and chemoreceptors are
Answer» OCELLI sensillae OMMATIDIA all the above ANSWER :B

Discussion

24.	Question : Unit of perianth is …………….
Answer» PETAL sepal TEPAL STAMEN SOLUTION :tepal

Discussion

25.	Question : Unit of ...... eye is ommatidium.
Answer» SOLUTION :COMPOUND

Discussion

26.	Question : Unit membrane structure is found in
Answer» plasma MEMBRANE only nuclear membrane only all CELL organelles animal membranes only Answer :C

Discussion

27.	Question : Unisexuality of flowers prevents
Answer» AUTOGAMY, but not GEITONOGAMY Both geitonogamy and XENOGAMY Geitonogamy, but not xenogamy Autogamy and geitonogamy ANSWER :A

Discussion

28.	Question : Unisexual flat worm lives in snail and in human beings
Answer» Fasciola Schistosoma TAENIA solium Paragonimus Answer :B

Discussion

29.	Question : Unique (significant) vegetative characters formed in members o Fabaceae
Answer» Tap root system , RETICULATE VENATION Nodular roots , pulvinous leaf base Woods climbers , simple leaves Vexillary aestivation, papilionaceous corolla ANSWER :B

Discussion

30.	Question : Unique feature of molluscs is
Answer» SEGMENTATION MANTLE ARISTOTLE's lantern spiny skin Answer :B

Discussion

31.	Question : Unique feature of secondary growth in dicot root when compared with the stem is
Answer» FORMATION of vascular cambium from stelar Formation of cork cambium from extrastelar tissue in all SPECIES Formation of both cork cambium and vascular cambium from stelar tissue in MANY of the species Formation of vascular cambium from stelar tissue and cork cambium from cortical tissue in many of the species Answer :C

Discussion

32.	Question : Unipolar neuron possess
Answer» dendrite only one AXON only both 1 & 2 none Answer :B

Discussion

33.	Question : unilocular and ovules are on two vertical rows on ventral sutures is called
Answer» Marginal PLACENTATION PARIETAL placentation SUPERFICIAL placentation Basal placentation Answer :A

Discussion

34.	Question : Unifoliate compound leaf is found in:
Answer» CITRUS LATHYRUS aphaca Asparagus Parkinsonia SOLUTION :Citrus

Discussion

35.	Question : Unidirectional transmission of nerve impulse through nerve fibre is due to the fact that
Answer» nerve FIBRE is insulated by a medullary sheath sodium PUMP STARTS operating only at the cyton and then continues into the nerve fibre neurotransmitters are released by dendrites and not by axon endings neurotransmitters are released by the axon endings and not by dendrites. Solution :A nerve impulse is transmitted from one neuron to another with the HELP of CHEMICALS called neurotransmitters that are released by the axon endings formed by the membrane of a pre-synaptic neuron (axon ending part) and a post-synaptic neuron which may or may not be separated by synaptic cleft.

Discussion

36.	Question : Unidirectional flow of materials around a large central vacuole of the cell is called
Answer» CIRCULATION Brownian movement ROTATION (1) and (2) ANSWER :C

Discussion

37.	Question : Unidirection flow fo water minerals, some organic nitrogen and hormones occurs through
Answer» xylem PHLOEM root VASCULAR tissue. Solution :There are two types of vascular tissues in plants, xylem and phloem. Xylem translocation is MAINLY from roots to aerial parts. It passes water with mineral salts, some ORGANIC nitrogen and hormones Phloem translocation organic substances and some inorganic solutes first from leaves ot all other parts of the PLANT and storage organs. Storage organs re-export organic nutrients to those parts which require the same such as newly formed leaves and fruits.

Discussion

38.	Question : Unicellular SCP algae are
Answer» VOLVOX, Chara Chlorella, Spirulina Gelidium, Gracilaria Laminaria, Sargassum Answer :B

Discussion

39.	Question : Unicellular organism :
Answer» SOLUTION :The ORGANISMS which are made up of only ONE cell is CALLED UNICELLULAR organism.

Discussion

40.	Question : Unicellular ogranisms are not found in
Answer» Chlorophyta Xanthophyta Euglenophyta Phaeophyta Answer :D

Discussion

41.	Question : Undistinguished sepal and petal is called as
Answer» PETALOID STAMINODE PERIANTH SEPALOID SOLUTION :Perianth

Discussion

42.	Question : Underground stems are generally called as ………………………
Answer» ROOT CAPS root stocks root pockets root MODIFICATION SOLUTION :root stocks

Discussion

43.	Question : underproduction of hormonesby adrenal cortex alters carbohydrate metabolism causing active weakness and fatigue de hydration and metabolic acidosis this disease is called
Answer» Addison's DISEASE DIABETES MELLITUS diabetes insipidus Grave's disease Answer :A

Discussion

44.	Question : Underground stem of the following spread of new niches and form new plants when the older parts die
Answer» STRAWBERRY GRASS Agave 1 & 2 Answer :D

Discussion

45.	Question :Underground cleistogamous flowers are present in
Answer» hibiscus datura commelina glorisa Answer :3

Discussion

46.	Question : Under which condition does chlorophyll a molecule change from the ground state to the excited state?
Answer» Solution :When chlorophyll a molecules absorbs a photon of light it CHANGES from GROUND to excited STATE.

Discussion

47.	Question : Under what conditions are C_(4) plants superior to C_(3) ?
Answer» SOLUTION :The benefits of `C_(4)` plants are shown below. (i) These plants can do photosynthesis in atmosphere with LESS concentrationof `CO_(2)` and in water source conditio. These plants can tolerate temperature and concentraton of `O_(2)`. Ifhas an enzyme named PEP CARBOXYLASE which is INSENSITIVE for `O_(2)` so no photorespiration and Glucose molecule is formed by losing `CO_(2)` FIXATION. So `C_(4)` plants are better than `C_(3)` plants.

Discussion

48.	Question : Under secretion of GH causes giangtism/low secretion results in stunted groth.
Answer» SOLUTION :LOW SECRETION

Discussion

49.	Question : Under production of hormones by adrenal cortex can cause addison's disease.
Answer» ANSWER :TRUE

Discussion

50.	Question : Under ground stem acts as organ of perennation in
Answer» CURCUMA and Colocasia Allium and Zingiber POTATO and Amorphophallus All the above Answer :D

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : Uric acid is the main nitrogenous waste in(a) fish(b) amphibians(c) birds(d) mammals

Question : Uric acid is the chief nitrogenous component of the excretory product of ....

Question : Ureters and genital ducts are separately open into cloaca in

Question : Ureters act as urinogenital ducts in

Question : Urea synthesis occurs in

Question : Urea is transformed through ………………………………………

Question : Urea is formed in which organ of rabbit?

Question : Urea is directly produced in mammals from

Question : Uracil is present in RNA at the place of :

Question : upper : scala vestibuli :: lower : ........

Question : Upper part of petiole is modified into tendril in

Question : Upon the oxidation of one mole of pyruvate by mitochondrial respiration, the moles of ATP generated by mitochndrial respiration, the moles of ATP generated are

Question : Upon stimulation of skeletal muscles, calcium is immediately made available for binding to troponin from

Question : Uphill transport I.e. movement of substances from their lower concentation to their higher concentration occurs in

Question : Unsegmented, worm like animals with proboscis, collar and trunk.

Question : Unrelated character regarding Trichomes in the shoot system is

Question : Unlike primary growth, secondary growth in both roots andstems :

Question : Unlike placental mammals, both monotremes and marsupials:

Question : Unlike eukaryotic cells, prokaryotic cells :

Question : Universal smaller sub unit of ribosome is

Question : Universal cell organelles (found in all living cells) are

Question : Universal cell organelles are

Question : Units of cuticular and chemoreceptors are

Question : Unit of perianth is …………….

Question : Unit of ...... eye is ommatidium.

Question : Unit membrane structure is found in

Question : Unisexuality of flowers prevents

Question : Unisexual flat worm lives in snail and in human beings

Question : Unique (significant) vegetative characters formed in members o Fabaceae

Question : Unique feature of molluscs is

Question : Unique feature of secondary growth in dicot root when compared with the stem is

Question : Unipolar neuron possess

Question : unilocular and ovules are on two vertical rows on ventral sutures is called

Question : Unifoliate compound leaf is found in:

Question : Unidirectional transmission of nerve impulse through nerve fibre is due to the fact that

Question : Unidirectional flow of materials around a large central vacuole of the cell is called

Question : Unidirection flow fo water minerals, some organic nitrogen and hormones occurs through

Question : Unicellular SCP algae are

Question : Unicellular organism :

Question : Unicellular ogranisms are not found in

Question : Undistinguished sepal and petal is called as

Question : Underground stems are generally called as ………………………

Question : underproduction of hormonesby adrenal cortex alters carbohydrate metabolism causing active weakness and fatigue de hydration and metabolic acidosis this disease is called

Question : Underground stem of the following spread of new niches and form new plants when the older parts die

Question :Underground cleistogamous flowers are present in

Question : Under which condition does chlorophyll a molecule change from the ground state to the excited state?

Question : Under what conditions are C_(4) plants superior to C_(3) ?

Question : Under secretion of GH causes giangtism/low secretion results in stunted groth.

Question : Under production of hormones by adrenal cortex can cause addison's disease.

Question : Under ground stem acts as organ of perennation in