226: Consider the following statements:
1. The common blue green algae Spirogyra and Ulothrix are found in both fresh water ponds and oceans.
2. The chameleon can look ahead with one eye, and at the same time look behind with another.
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Explanation:
Blue green algae (cyanobacteria) found in fresh water, brackish water and salt water.
Spirogyra (green algae) common in fresh water habitats.
Ulothrix (green algae) found in fresh and marine water habitats.
The eyes of chameleon (Chameleon calcaratus) are elevated in small cones and can move in all directions and each eye can see independently of the other.
227: Match List I with List II and select the correct answer by using codes given below the lists :
List I List II
I. Vitamin : (A) Pepsin
II. Enzyme : (B) Carotene
III. Hormone : (C) Keratin
IV. Protein : (D) Progesterone
Codes:
(a) I - A, II - B, III - C, IV - D
(b) I - B, II - A, III - D, IV - C
(c) I - B, II - A, III - C, IV - D
(d) I - A, II - B, III - D, IV - C
228: Chlorophyll contains:
(a) Beryllium
(b) Calcium
(c) Magnesium
(d) Strontium
229: The tropical deciduous trees shed their leaves in summer:
(a) Leaves get dried up due to the excessive heat
(b) To prevent excessive loss of water through transpiration
(c) Because rainfall is inadequate
(d) Days are longer
230: Fuel used in a nuclear reactor is:
(a) Uranium
(b) Heavy water
(c) Barium
(d) Cadmium