| 1 |
Contractile vacuoles are found in. |
- A. Plants
- B. Fresh water protozoa
- C. Marine plants
- D. Pino cytosis
|
| 2 |
The excretory product that requires maximum water for its removal is. |
- A. Ammonia
- B. Creatinine
- C. Urea
- D. Uric acid
|
| 3 |
The Planaria flatworm have simple tubular excretory system known as. |
- A. Protonephridium
- B. Mesonephridum
- C. Prenephridium
- D. Metanephridium
|
| 4 |
Activation of sweat glands to produce sweat from evaporative cooling is a type of adaptation. |
- A. Structural
- B. Physiological
- C. Behavioural
- D. None of these
|
| 5 |
The most concentrated external environment is termed as. |
- A. Hypotonic
- B. Hypertonic
- C. Osmotic
- D. Isotonic
|
| 6 |
The category of plants that has adaptation of small and thick leaves to limit water loss is called. |
- A. Hydrophytes
- B. Xerophytes
- C. Aygrophytes
- D. Mesophytes
|
| 7 |
The urine leaves the body during urination from bladder through a tube called. |
- A. Pelvis
- B. Urethra
- C. Ureter
- D. Medulla
|
| 8 |
When the human blood leaves the capillary bed of the tissue, most of the carbon dioxide is inthe form of: |
- A. Carbonic acid
- B. Bicarbonate ions
- C. Carboxylic acids
- D. None of them
|
| 9 |
The animals which are capable of varying degrees of endothermic heat production but generally do not regulate their body temperature within a narrow range |
- A. Ectotherms
- B. Endotherms
- C. Heterotherms
- D. Homotherms
|
| 10 |
The wall of trachea(windpipe) and bronchi of man is fernished with a series of incomplete: |
- A. Cartilagenous plates
- B. Chitinous rings
- C. Cartilaginous rings
- D. Muscular rings
|