Q. No.
Opening and closing of stomata is a function of
(1) Cuticle
(2) Guard cell
(3) Waxy layer
(4) Xylem
The stomatal aperture, guard cell and the surrounding subsidiary cells are together called________.
(1) Stomata
(2) Stomatal apparatus
(3) Stomatal aperture
(4) Cuticle
In plant stem the epidermal hairs are called
(1) Cilia
(2) Trichomes
(3) Trichoderms
(4) Trichromes
Trichomes help in
(1) Preventing water loss
(2) Have sensory role
(3) Help in combating grazing animals
(4) None of the above
All tissue except ____________ constitute the ground tissue.
1. Epidermis
2. Vascular bundles
3. Both (1) and (2)
4. Cuticle
In leaves the ground tissue consist of thin walled chloroplast containing cells and is called____.
1. Mesophyll
2. Chlorophyll
3. P250
4. Chromophore
The vascular system in plant consist of
(1) Xylem and phloem
(2) Xylem parenchyma and cortex
(3) Epidermis and cortex
(4) None of the above
In dicotyledonous stem _________ is present between phloem and xylem.
(1) Cork
(2) Cambium
(3) Connecting vessel
(4) Connecting tubes
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