Read the following statements:
(i) Long thin flexible petioles allow leaf blades to flutter in wind, thereby cooling the leaf and bringing fresh air to leaf surface
(ii) Leaf lamina lacks vascular bundles
(iii) Veins provide rigidity to leaf blades
(iv) Leaf possess reticulate or parallel venation
(v) The axil of leaflets may posses axillary buds
How many of the given statements are correct?

Three

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Two

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One

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Five

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Solution

The correct option is A Three
A. Three
EXPLANATION: The veins and veinlets of leaves always give rigidity to the leaf blade. The pattern of veins on leaf is called venation, which is of two types- reticulate or parallel. The plants with reticulate venation have tap roots and plants with parallel venation have fibrous root. Axillary buds are always present in the axil of the leaf. The axil of the leaf is present between the petiole and the stem.

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Question 4

Which of the following is not a correct match?
(a) Petiole: attaches leaf to stem
(b) Lamina: green flat part of leaf
(c) Margin: gives shape to the leaf
(d) Veins: transpiration

Q. ____ provides flexibility to the plants and is present in leaf petiole, while _____ provides strength and is found around vascular bundles.

Q. provides flexibility to the plants and is present in leaf petiole, while provides strength and is found around vascular bundles.

Find the odd one out.

Venation, shape of seeds, leaf petiole, leaf shape

Q. Read the following five statements (A - E)
(A) Sheathing leaf base is found in monocotyledons.
(B) In some leguminous plants the leaf base may become swollen, which is called the pulvinus.
(C) A bud is present in the axil of leaflets of the compound leaf.
(D) Palmately compound leaves are found in neem.
(E) Whorled phyllotaxy is found in Alstonia.
How many of the above statements are correct?

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