Read the given passage where few words have been italicised.

The adrenal cortex is composed of three distinct layers. The cells Of outer layer zona fasciculata have enzymes required for converting corticosterone to androgen. The major hormones of adrenal cor'tex are aldosterone, antidiuretic hormone and cortisol, Aldosterone is a mineralocorticoid, regulating the Nav and H20 balance in the body. Production of aldosterone is under control Of angiotensinogen, which acts on plasma membrane receptors to activate inositol triphosphate second-messenger pathway.

Select the correction regardin it.

Refer to the given figure of male reproductive system Of Periplaneta americana. Identify the labelled parts P — S and select the incorrect statement regarding them.

Read the given statements and select the option with

aII correct statements.

Which Of the given structures of nucleotides is correct?

choose the correct option.

Read the given steps of urine formation in humans, carefully.

(i) Reabsorption of glucose, amino acids, hormones, vitamins, water, urea etc. from filtrate in PCT makes it isotonic to blood plasma.

ii ) Reabsorption of Na⁺, K⁺, Ca²⁺, Mg²⁺ from filtrate makes it hypotonic to blood plasma.

(iii) The filtrate becomes hypertonic to blood plasma due to reabsorption of water.

(iv) Filtration of water and dissolved substances from the blood into lumen Of the Bowman's capsule.

(v) Active reabsorption of Na⁺ under the influence of aldosterone.

The correct sequence of steps is .......

Read the given examples Of structural evidences in

favour of evolution and select the option that correctly

groups them under the given columns.

Refer to the given graph showing bacterial population

measured in the river from the point of agricultural

waste discharge. Identify the correct statement.

What is the function of ATP in skeletal muscle

contraction?

Refer to the given figure representing transverse section

Of roots X and Y. Identify them and select the correct

statements.

Rafer to the given figures representing two tvpes of

life cycle pattern (X and Y) found in algae and list

of organisms that follows it.

Four children belonging to Mr Mehra and Ms Mehra

have thc blood groups A. B. AB and O. The genotypes

Ms Mehra are

Refer to the given nittogen cyele and identify

microorganisms involved at Steps (ii). (iii) and (iv)।

Which of thc following statements is incorrect ?

Refer to the given citric acid cycle. In which steps out

Of K — O, both decarboxylation and dehydrogenation

processes are involved ?

Which of the following options is correct

if a diploid cell has four sets of chromosomes and the total amount of DNA is denoted by x before DNA replication ?

Which of the following options is correct regarding

the given floral diagrams a and b ?

Which of the following pyramids of number would

most likely correspond with the given food chain?