311. All of the following are involved in nitrification except:
A. Nitrobacter
B. Nitroso monas
(C. Rhizobium)
D. All of these
312. Competition between species will be greatest if they attempt to occupy the same:
A. Ecosystem
B. Community
C. Habitat
(D. Niche)
313. In most ecosystems, the greatest amount of energy flows through the:
A. Secondary consumers
(B. Herbivores)
C. Carnivores
D. Decomposers
314. In plants, water is absorbed by the root hairs by a process called:
A. Respiration
B. Transpiration
(C. Osmosis)
D. Perspiration
315. Cell wall of chloroplast is removed, the remaining is called:
A. Etioplast
B. Aleuroplast
C. Amylopast
(D. Protoplast)
316. Which tissue is responsible for the passage of water in plants?
A. Sclerenchyma
B. Xylem
(C. Phloem)
D. None of these
317. Which of the following seeds can help a diabetic person maintain a normal blood sugar level?
A. Coriander seeds
(B. Mustard seeds)
C. Fenugreek seed
D. Cumin seeds
318. Which of the following is used by green plants for the manufacture of sugar?
A. Carbon dioxide
B. Sunlight
C. Water
(D. All of these)
319. Bamboo is a:
A. Herb
(B. Grass)
C. Shrub
D. Tree
320. In the human body, 99% of the total mass is formed of_____________?
(A. 6 Bio-elements)
B: 12 Bio-elements
C: 10 Bio-elements
D: 16 Bio-elements
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