4
MCQ (Single Correct Answer)
A large quantity of one of the following is removed from our body by lungs.
A
$\mathrm{CO}_2$ only
B
$\mathrm{H}_2 \mathrm{O}$ only
C
$\mathrm{CO}_2$ and $\mathrm{H}_2 \mathrm{O}$
D
ammonia
5
MCQ (Single Correct Answer)
The pH of human urine is approximately?
A
6.5
B
7
C
6
D
7.5
6
MCQ (Single Correct Answer)
Different types of excretory structures and animals are given below. Match them appropriately and mark the correct answer from among those given below
| Excretory Structure/Organ | Animals | ||
|---|---|---|---|
| A. | Protonephridia | 1. | Prawn |
| B. | Nephridia | 2. | Cockroach |
| C. | Malpighian tubules | 3. | Earthworm |
| D. | Green gland or antennal gland | 4. | Flatworms |
A
A-4, B-3, C-2, D-1
B
A-4, B-3, C-1, D-2
C
A-4, B-3, C-1, D-2
D
A-2, B-3, C-2, D-4
7
MCQ (Single Correct Answer)
Which one of the following statements is incorrect?
A
Birds and land snails are uricotelic animals
B
Mammals and frogs are ureotelic animals
C
Aquatic amphibians and aquatic insects are ammonotelic animals
D
Birds and reptiles are ureotelic
8
MCQ (Single Correct Answer)
Which of the following pairs is wrong?
A
Uricotelic ........... Birds
B
Ureotelic ........... Insects
C
Ammonotelic ........... Tadpole
D
Ureotelic ........... Elephant