Question

1. Blue copper protein complex contained in some molluscs in their plasma for oxygen transport is
(a) Haemocyanin
(b) Chlorocruorins
(c) Bilirubin
(d) Haemoglobin

2. ln response to CO2 and H+ concentration, the Chemosensitive area and receptors associated with aortic arch and carotid artery, send necessary signals for remedial actions to
(a) Pneumotaxio centre
(b) Slower and deeper breathing
(c) Respiratory rhythm centre
(d) both 1 and 2

3. Alveoli become enlarged and damaged with reduced surface area in heavy smokers. The condition is called
(a) silicosis
(b) Emphysema
(c) Asthma
(d) Bronchitis

4. The liquefied semi-digested acidic food is known as
(a) Bile
(b) Bolus
(c) Chyme
(d) Faeces

5.Fertilised eggs of frog develop into
(a) Adult frogs
(b) Tadpoles
(c) Nymph
(d) Both 1 and 2​

Answer 1

1st answer :-

Blue copper protein complex contained in some molluscs in their plasma for oxygen transport is

☑ (a) Haemocyanin

(b) Chlorocruorins

(c) Bilirubin

(d) Haemoglobin

Option (a) Haemocyanin is right

Explaination :-

Blue copper protein complex contained in some molluscs in their plasma for oxygen transport is Haemocyanin.

━━━━━━━━━━━━━━━

2nd answer :-

ln response to CO2 and H+ concentration, the Chemosensitive area and receptors associated with aortic arch and carotid artery, send necessary signals for remedial actions to

(a) Pneumotaxio centre

(b) Slower and deeper breathing

☑ (c) Respiratory rhythm centre

(d) both 1 and 2

Option (c) Respiratory rhythm centre is right.

Explaination :-

ln response to $\sf Co_2$ and H+ concentration, the Chemosensitive area and receptors associated with aortic arch and carotid artery, send necessary signals for remedial actions to respiratory rhythm centre

━━━━━━━━━━━━━━━

3rd Answer :-

Alveoli become enlarged and damaged with reduced surface area in heavy smokers. The condition is called

(a) silicosis

☑ (b) Emphysema

(c) Asthma

(d) Bronchitis

option (b) Emphysema is right.

Explaination :-

Alveoli become enlarged and damaged with reduced surface area in heavy smokers. The condition is called Emphysema.

━━━━━━━━━━━━━━━

4th Answer :-

The liquefied semi-digested acidic food is known as

(a) Bile

(b) Bolus

☑ (c) Chyme

(d) Faeces

option (c) Chyme is right

Explaination :-

The liquified semi-digested acidic food, is formed in stomach and passes to the duodenum, part of small intestine.

━━━━━━━━━━━━━━━

5th AnSwer :-

Fertilised eggs of frog develop into

(a) Adult frogs

☑ (b) Tadpoles

(c) Nymph

(d) Both 1 and 2

option (b) Tadpoles is right

Explaination :-

Within 2 weeks, fertilised eggs develop into free - swimming aquatic larve called tadpole which undergo metamorphosis to become adult frogs.