| 1 |
Most of the uptake of water and minerals from soil takes place through |
- A. Roots
- B. Root hair
- C. Epidermal layers
- D. Root cap
|
| 2 |
Temperature causes closure of stomata. |
- A. 30-40 <sup>o</sup>C
- B. 30-35<sup>o</sup>C
- C. 40-45<sup>o</sup>C
- D. 25-35<sup>o</sup>C
|
| 3 |
The pressure flow theory is the most acceptable theory for the transport in the phloem of |
- A. Gymnosperm
- B. Bryophytes
- C. Angiosperms
- D. Pteridophyte
|
| 4 |
The open circulatory system is present in |
- A. Periplaneta
- B. Pheretima
- C. Amphioxus
- D. Rana tigrina
|
| 5 |
Single circuit heart is found in. |
- A. Fishes
- B. Bird
- C. Reptiles
- D. Mammals
|
| 6 |
The Casparian strips are present in |
- A. Cortex cells of roots
- B. Endodermal cells of roots
- C. Cells of xylem
- D. Cellf of phloem
|
| 7 |
The pressure flow theory was first proposed in 1930 |
- A. Emst hackel
- B. Ernst Munch
- C. Dixon
- D. Hemming
|
| 8 |
The dew drops on the tip of the grass leaves involves the phenomenon. |
- A. Imbibition
- B. Bleeding
- C. Guttation
- D. Transpiration pull
|
| 9 |
In Hydra ectodermal cells get food from endodermal cells by |
- A. Endocytosis
- B. Exocytosis
- C. Both a and b
- D. Diffusion
|
| 10 |
The maximum depth of roots of prospis is. |
- A. 40 meters
- B. 50 meters
- C. 60 meters
- D. 70 meters
|