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The
species diversity of plants (22 per cent) is much less than that of
animals (72 per cent). What could be the explanations to how animals
achieved greater diversification?

Regarding the assertion and reason; choose the correct option.

Assertion [A]: Bile has a significant role in digestion of fats

Reason [R]: Bile salts (Sodium taurocholate and sodium glycocholate) emulsify fats

A cell kept in a hypertonic solution undergoes ________.

Which among the following is a pseudocoelomate?

Refer the figure showing major pathway of anaerobic respiration.





Identify P, Q, R and S in the above.

Arrhenotoky is seen in

Match the following and choose the correct option -

"$$\begin{array}{cc}ColoumnI& ColoumnII\\ a.Isogamy& 1.\text{Male and female gametes are different}\\ b.Anisogamy& 2.\text{Female gamete is non-motile}\\ c.Oogamy& 3.\text{Gametes are identical}\end{array}$$ "

Define immunization ?

The outline of principal events of urination is given in random manner.

(1) Stretch receptors on the wall of urinary bladder send signals to the CNS.

(2) The bladder fills with urine.

(3) Micturition

(4) CNS passes on motor messages to initiate the contraction of smooth muscles of bladder and simultaneous

relaxation of sphincter. The correct sequence of the event is:

There are 2 families A and B. There are 4 men, 6 women and 2 children in family A, and 2 men, 2 women and 4 children in family B. The recommended daily amount of calories is 2400 for men, 1900 for women, 1800 for children and 45 grams of protein for men, 55 grams, for women and 33 grams for children. Represent the above information using matrices. Using matrix multiplication, calculate the total requirement of calories and proteins for each of the 2 families. What awareness can you create among people about the balanced diet from this question ?

In the genetic code, all codons consist of:

Hernioplasty is the procedure to cure

जो बच्चा बोल नहीं सकता, वह किस-किस बात की आशंका से 'घबरहाट' महसूस कर सकता है?

Identify these structures.

Growth hormone is secreted by

Which one of the following is a physiological barrier to the entry of microorganisms?

GEAC makes decisions regarding

1. What is the aim of the experiment?


2. Name the liquid contained in flask A and B.


3. What would be the observation after the experiment?

Question 49
The entire process of photosynthesis consists of a number of reactions. Where in the cell do each of these take place?
(a) Synthesis of ATP and NADPH ............... .
(b) Photolysis of water ............. .
(c) Fixation of $C{O}_2$ .............. .
(d) Synthesis of sugar molecule ............... .
(e) Synthesis of starch .................. .

Which of the following represents the correct sequence of organs through which air passes during inhalation?

Separation of homologous chromosomes is

E. coli cells with a mutated Z gene of the Lac operon cannot grow in a medium containing only lactose as the source of energy because

How can passive immunity be achieved?

Compounds that contain a nitrogenous base, a sugar, and a phosphate group are called (i)_______. The nitrogenous bases that bind to the sugar are of two types;(ii)______and (iii)______, and they are linked to the sugar through (iv)______ bond.

The relationship between the two organisms when grown individually (Section P) and grown together

(Section Q) is shown in the graph. The relationship is most likely to be

_______ are underground horizontal stems, whereas ________are above ground horizontal stems.

Domestic sewage of large cities:

Primary and secondary processes of photosynthesis take place in ______ and ______respectively.

Vitamin $B_2$ is component of coenzyme