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Important Questions on Anatomy of Plants

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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
"Transpiration is a necessary evil". Discuss.
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Draw a diagram of stomata of Rheo leaf and write any two functions of stomata.
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Explain Transpiration pull theory.
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Xylem translocate
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange these plants in the order (faster to slowest) in which they will dry up.
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
A column of water within xylem vessels of tall trees does not break under its weight because of:
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
"Transpiration is a necessary evil". Explain.
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are:
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf

Study the diagram and the list given below.

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i) Chloroplast

ii) Epidermal cell

iii) Guard cell

iv) Subsidiary cell

v) Stomatal pore

The correct match is

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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf

Given below is a diagram of the stomatal apparatus. Match the labels with the corresponding names of the compounds. 

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Choose the correct combination.

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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Which one of the following anatomical structures is involved in guttation?
 
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options:
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf

Match List - I with List - II.

List-I List-II
(a) Cohesion (i) More attraction in liquid phase
(b) Adhesion (ii) Mutual attraction among water molecules
(c) Surface tension (iii) Water loss in liquid phase
(d) Guttation (iv) Attraction towards polar surfaces
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf

Given below are two statements:

Statement I: The forces generated by transpiration can create pressures sufficient to lift a xylem sized column of water over 130 metres high.
Statement II: Transpiration cools leaf surfaces, sometimes 10 to 15 degrees, by evaporative cooling.

In the light of the above statements, choose the most appropriate answer from the options given below:

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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following.
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Choose the correct statements
A) In cucurbits, phloem is present on either side of xylem and separated by cambium
B) Impermeability of water in epidermis is due to suberin deposition
C) Parenchymatous conjunctive tissue is present between protophloem and metaphloem
D) More stomata are present on abaxial side than adaxial side in a Dorsiventral Leaf
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
A student observes grass and Hibiscus plants in his garden during noon. To his surprise, only the leaves of grass were found rolled inwards. The reason could be
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Take two plants, keep plant A in very dry conditions and plant B in high humidity. Simultaneously, immerse the roots of both plants in water with a red dye. What would you observe?
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
Transpiration and root pressure cause water to rise in plants by:
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Biology>Biology of Plant Systems>Anatomy of Plants>Anatomy of Leaf
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is