Though both starch and cellulose are composed of repeating glucose units, the main difference between them is that: 

(a) they are bonded by 1-6 and 1-4 glycosidic linkages respectively. 

(b) they differ in the α and  β configuration. 

(c) most of the fruits and grains are rich in starch and poor in cellulose or fiber. 

(d) starch is made of simple sugars while cellulose is made of amino sugars.

Eastern and Western Meadow Larks look almost the same and inhabit the same areas of Prairie. They recognize mates of their own species by distinctive courtship songs: This is an example of type of pre-zygotic isolation. 

(a) Ecological 

(b) gametic 

(c) mechanical 

(d) behavioural

The X in the accompanying diagram is:

(a) amniotic egg 

(b) bipedal locomotion 

(c) diapsid skull 

(d) four chambered heart

Four types of chemical messengers (Black Dots) released from the regulator cell (R) to the target cell (T) are depicted in I, II, III and IV

Match I, II, III and IV sequentially with (i) Steroid Hormone, (ii) Pheromones, (iii) Neurohormone iv) Neurotransmitter and choose the correct option. 

(a) iv, iii, ii, i 

(b) iv, iii, i, ii 

(c) i, ii, iii, iv 

(d) iii, iv, i, ii

Filtration rate through kidneys is dependent on the filtration pressure. This in turn depends on the following three factors: 

l. Glomerular blood hydrostatic pressure 

II. Capsular hydrostatic pressure 

III. Blood colloid osmotic pressure 

The net filtration pressure will be:

(a) I+ II+ III 

(b) I – ( II + III) 

(c) (I+III)-II 

(d) II – (I + III)