31.

Which of the following hormones is a derivative of fatty acid?

• Gastrin

• Thyroxin

• Estrogen

• Prostaglandins

Which of the following is not involved in muscular contraction?

• Calcium ion

• Troponin

• Actin

• Magnesium ion

Proximal convoluted tubule of nephron is responsible for

• filtration of blood

• maintenance of glomerular filtration rate

• selective reabsorption of glucose, amino acid, NaCl and water

• reabsorption of salts only

Which of the following bacteria is observed as chain-like formation?

• Escherichia coli

• Bacillus subtilis

• Streptococcus pyogenes

• Micrococcus flavus

The partial floral formula of a flower is K₍₅₎C₅A_($\infty$)$\underline{\mathrm{G}}$_(5).

Which of the following set of information is conveyed here?

• Gamosepalous, polypetalous, syncarpous and superior ovary

• Polysepalous, polypetalous, syncarpous and inferior ovary

• Gamosepalous, gamopetalous, polycarpous and superior ovary

• Gamosepalous, polypetalous, syncarpous and inferior ovary

Match the items in column I with those in column II and choose the correct answer

Column I	Column II
A. Control of weeds	1. Gibberellin
B. Induction of germination	2. Cytokinin
C. Ripening of fruit	3. 2, 4- D
D. Delaying of senescence	4. Ethylene

• A- 2; B- 4; C- 3; D- 1

• A- 3; B- 1; C- 4; D- 2

• A- 1; B- 2; C- 4; D- 3

• A- 2; B- 3; C- 1; D- 4

Out of 38 molecules of ATP produced upon aerobic respiration of glucose, the break up if ATP production in glycolysis (P), pyruvate to acetyl Co- A formation (Q) and Krebs' cycle (R) is as follows

• P= 2, Q= 6, R= 30

• P= 8, Q= 6,R= 24

• P= 8, Q= 10, R= 2

• P= 2, Q= 12, R= 24

The correct sequence of organelles in which glycolate and glyoxylate are produced sequentially in photorespiration is

• chloroplast and mitochondria

• chloroplast and peroxisome

• peroxisome and mitochondria

• peroxisome and chloroplast

Cells die at the time of release of secretory materials in

• holocrine gland

• apocrine gland

• merocrine gland

• mixed or apocrine gland

Absorption of vitamin-B;» in human requires 'P' glycoprotein secreted from 'Q'. The correct choices of P and Q are

• P - Extrinsic factor; Q - Stomach

• P - Intrinsic factor; Q - Stomach

• P - Intrinsic factor; Q - Small intestine

• P - Exopolysaccharide; Q - Small Intestine