| 1 |
The structure in the mouth that prevents food from entering the nasal cavity is |
- A. Epiglottis
- B. Soft palate
- C. Tongue
- D. Pharynx
|
| 2 |
Length of the duodenum is. |
- A. 15-20 cm
- B. 20-25 cm
- C. 30-35 cm
- D. 10-15 cm
|
| 3 |
A common mussel has two large gills covered with |
- A. shell
- B. Pseudopodia
- C. flagella
- D. Cilla
|
| 4 |
Parietal cells of linings of human stomach secrete. |
- A. Mucus
- B. Pepsinogen
- C. Gastrin
- D. Hydrochloric acid
|
| 5 |
Gastric secretion is inhibited by |
- A. Bile
- B. Gastrin
- C. Pancreatic juice
- D. Secretin
|
| 6 |
In root nodules bacteria convert nitrogen into. |
- A. Ammonia
- B. Nitrate
- C. Urea
- D. Nitrite
|
| 7 |
The animals which ingest food in liquid form are called. |
- A. Carnivores
- B. Filter feeders
- C. Fluid feeders
- D. Macrophageous feeders
|
| 8 |
A plant requires potassium for |
- A. Synthesizing proteins
- B. Synthesizing chlorophyll
- C. opening and closing of stomata
- D. None of these
|
| 9 |
The partly digested food in cockroach is temporarily stored in. |
- A. Crop
- B. Gizzard
- C. Rectum
- D. Stomach
|
| 10 |
The animal which feed on organic debris are |
- A. Herbivores
- B. Carnivores
- C. Omnivores
- D. Detrivores
|