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NEET Practice Questions (MCQs) with Answers & Solutions

Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

All Physics Chemistry Botany Zoology

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Seeds placed in water imbibe the water because of

A. Exosmosis B. Higher Î¨ d_Wd C. Lower Î¨ d_Wd D. Pressure of vacuoles

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In thistle funnel experiment, entry of water into thistle funnel stops after some time automatically due to

A. Diffusion of sugar out of thistle funnel. B. External and internal solutions become isotonic. C. Development of hydrostatic pressure in the thistle funnel. D. Development of hydrostatic pressure in the beaker.

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Stomatal aperature is surrounded by guard cells and opens when guard cells are

A. Flaccid B. Turgid C. Bean shaped D. Dumb-bell shaped

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Stomatal frequency indicates.

A. Number of stomata per unit area B. Rate of water loss C. Rate of gaseous exchange D. Width of stomatal aperature

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In dorsiventral leaf, the number of stomata per unit area are generally.

A. Same on both the surface B. More on lower surface (epidermis) C. More on upper surface (epidermis) D. Absent on upper surface

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In isobilateral leaf, the number of stomata per unit area are.

A. More on upper surface B. More on lower surface C. Approximately same on both the surfaces D. Absent on both the surfaces

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In xerophytic leaf the stomata are situated.

A. On both surfaces B. On upper surface C. On lower surface D. Absent from both surfaces

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The loss of water in form of water drops is called.

A. Transpiration B. Respiration C. Guttation D. Exosmosis

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Transpiration is unavoidable evil because of

A. Structure of leaf and harmful effect B. Beneficial and harmful effect. C. Maintenance of turgidity for growth D. Gaseous exchange for photosynthesis and respiration

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Plants with scoto active stomata perform

C₄ photosynthesis

CAM photosynthesis

C₃ photosynthesis

An oxygenic photosynthesis

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