581. Maize grain is ?
(A: A seed)
B: An embryo
C: An ovule
D: A fruit
582. For which part of the plant is turmeric obtained?
A: Root
B: Fruit
C: Seed
(D: Stem)
583. Banana fruit contains mainly:
A: Glucose
(B: Starch)
C: Fat
D: Proteins
584. In making the saffron spice, which one of the following parts of the plant is used?
A: Leaf
B: Petal
C: Sepal
(D: Stigma)
585. The role of chlorophyll in photosynthesis is:
A: Absorption of water
(B: Absorption of light)
C: Absorption of oxygen
D: None of these
586. Herbicides are chemicals that control:
A: Fungi
(B: Weeds)
C: Nematodes
D: Insects
587. In a food chain, the solar energy utilized by plants is only:
A: 0.1 Percent
(B: 10 Percent)
C: 1 Percent
D: 0.01 percent
588. Who are the main producers in an ecosystem?
(A: Green plants)
B: Animals
C: Fungi and bacteria
D: Sometimes all of the above
589. Movements due to light are shown by:
(A: Flowering plants)
B: Lower plants
C: All land plants
D: All the plants
590. Vacuoles are bound by a definite membrane in the plant cell called:
A: Plasma membrane
(B: Tonoplast)
C: Cell wall
D: None of these
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