1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are :
A
pO2 = 159 and pCO2 = 0.3
B
pO2 = 104 and pCO2 = 40
C
pO2 = 40 and pCO2 = 45
D
pO2 = 95 and pCO2 = 40
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
Read the following statements

(1) Metagenesis is observed in Helminths.

(2) Echinoderms are triploblastic and coelomate animals.

(3) Round worms have organ-system level of body organization.

(4) Comb plates present in ctenophores help in digestion.

(5) Water vascular system is characteristic of Echinoderms.

Choose the correct answer from the options given below.
A
(2), (3) and (5) are correct
B
(3), (4) and (5) are correct
C
Round (1), (2) and (3) are correct
D
(1), (4) and (5) are correct
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
A
100%
B
50%
C
75%
D
25%
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following statements wrongly represents the nature of smooth muscle?
A
These muscles are present in the wall of blood vessels
B
These muscle have no striations
C
They are involuntary muscles
D
Communication among the cells is performed by intercalated discs
EXAM MAP