Guard cells help in ?
(a) protection against grazing
(b) transpiration
(c) guttation
(d) fighting against infection

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Palisade parenchyma is absent in leaves of :-

(a) Sorghum
(b) mustard
(c) soybean
(d) gram

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Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

(a) xerophytes
(b) mesophytes
(c) epiphytes
(d) hydrophytes

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Vascular tissues in flowering plants develop from

(1) phellogen

(2) plerome

(3) periblem

(4) dermatogen

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For a critical study of secondary growth in plants, whic one of the following pairs is suitable:

(a) Sugarcane and sunflower

(b) Teak and pine

(c) Deodar and fern

(d) Wheat and maiden hair fern

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A common structural feature of vessel elements and sieve tube elements is :-
(a) thick secondary walls
(b) pores on lateral walls
(c) presence of P-protein
(d) enucleate condition

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If the stoma remains surrounded by a limited number of cells which cannot be distinguished from other epidermal cells, then this type of stomata is known as.

(a) perigynous type
(b) paracytic type
(c) anisocytic type
(d) anomocytic type

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In the given diagram of section of root of maize, different parts have been indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts which they indicate.

(a) A = Phloem, B = Xylem, C = Cortex, D = Endodermis, E = Pith, F = Root hair, G = Epidermis

(b) A = Pith, B = Root hair, C = Epiblema, D = Cortex, E = Endodermis, F = Phloem, G = Xylem

(c) A = Root hair, B = Epiblema, C = Cortex, D = Endodermis, E = Pith, F = Xylem, G = Phloem

(d) A = Epiblema, B = Root hair, C = Vascular bundle, D = Cortex, E = Phloem, F = Xylem, G = Pith

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Fascicular cambium separates the xylem and phloem in:-
(a) only dicots
(b) only monocots
(c) both dicots and monocots
(d) none of the above.

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Epidermis is derived from:-
(a) phellogen
(b) cambium
(c) procambium
(d) none of these

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