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Which graph shows the effect of temperature on the rate of photosynthesis?

Identify the correct sequence of the stages in primary hydrach succession.

In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:

What is pereoxisome and its function??

And what is function of nucleolus?

Which of the following statements is true?

If the pollen cell contain 18 chromosomes, then number of chromosomes in the enderpesm will be

What is incorrect about ringworm disease?

How many times does the Krebs cycle turn per glucose molecule

Regarding assertion and reason, select the correct option.
Assertion[A]: Certain species are highly territorial in nature.
Reason[R]: Species that are territorial in nature are always large.

Which of the following are oviparous animals and which are viviparous animals?

Frog, Human being, Sparrow, Lizard, Cow, Dog, Hen, Fish, Butterfly, Cat.

Given below are four methods (A-D) and their modes of action (i) - (iv) in achieving contraception. Select their correct matching from the four options which follow.

When a queen ant dies, what happens to the rest of the colony?

Which of the following muscle types contains peripherally located, multiple nuclei in its cells?

On the African plain, large herbivores like black rhinoceros disturb insect communities as they move. Birds like cattle egret feeds on the displaced insects. Neither the displacement of insects nor the activity of birds has any effect on the rhino. Oxpecker (a small dark bird) removes ticks from the skin of the rhino. The bird gets food and the mammals get relief from parasites.
Match the alphabets with the relationship that the organisms possess among themselves and then write only appropriate number in the space against each alphabet.


(1) Predation (2) Parasitism
(3) Commensalism (4) Amensalism
(5) Mutualism (6) Competition

Question 48
Is it correct to say that photosynthesis occurs only in leaves of a plant?
Besides leaves, what are the other parts that may be capable of carrying out photosynthesis? Justify.

Define Glomerular Filtration Rate (GFR).

Regarding the following, choose the correct option

Assertion[A]: A peacock has a more vibrant and beautiful plumage when compared to a peahen.

Reason[R]: Sexual selection leads to the exaggerated dimorphic traits that are used in competition over mates.

The cereal crops have fibrous roots and the pulses crops have tap roots. What do you make out of this statement?

How many $ATP$ is generated in aerobic respiration via glycerol phosphate shuttle in eukaryotes?

Which one of the plant growth regulators would you use if you are asked to:

(a) Induce rooting in a twig

(b) Quickly ripen a fruit

(c) Delay leaf senescence

(d) Induce growth in axillary buds

(e) 'Bolt' a rosette plant

(f) Induce immediate stomatal closure in leaves.

Define artificial system of classification.

Amino acid which takes part in the formation of thyroxine is

Difference between eukaryotes and prokarotes in transcription

ABO blood grouping in human beings is an example for

Can growth be considered as a defining feature of all living things without an exception

Watson and Crick proposed the helical model of DNA in the year,

Explain the events involved in gestation period during pregnancy

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

How many different types of gametes will be produced by a plant having genotype AABbCc?

All of the following hold true for Vikings EXCEPT

Growth that is accompanied by metabolic processes which spend energy involves

Go through the following statements
(i) Chromosomal aberrations are commonly observed in the cancer cells.
(ii) The possibility of a female becoming a haemophilic is extremely rare because mother of such a female has to be at least carrier and the father should be haemophilic.
(iii) All the daughters of a couple exhibiting sickle- cell trait, will suffer from sickle – cell anaemia.
(iv) Myotonic dystrophy is an autosomal recessive trait.

Find the out the correct statements,

The distribution of stomata are equal on both the surface of leaf are seen in