MCQ
A cell division in which a diploid somatic cell divides into two identical daughter cells is called
- AMeiosis $I$
- BMeiosis $II$
- ✓Mitosis
- DCytokinesis
✓
Answer
Correct option: C.
Mitosis
c
Mitosis (equational division) occurs in somatic cells.
Mitosis (equational division) occurs in somatic cells.
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(i) Dicot root always have 2-4 xylem and phloem patches.
(ii) All tissues on the inner side of the endodermis such as pericycle, vascular bundles and pith constitute the stele.
(iii) There are usually less than six xylem bundles in the monocot root.
(iv) The outer hypodermis consists of few layers of collenchymatous cells just below the epidermis, which provide mechanical strength to the young stem.
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(vi) A large number of vascular bundles are arranged in a ring; the 'ring' arrangement of vascular bundles is a characteristic of dicot stem.
(vii) The monocot stem has a sclerenchymatous hypodermis and a large number of scattered vascular bundles.
(viii) The adaxial epidermis generally bears more stomata than the abaxial epidermis.
(ix) The sizes of the vascular bundles are dependent on the size of the veins.
(x) In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, coloured cells. These are called buliform cells.
(xi) The tissues involved in secondary growth are the two lateral meristems: vascular cambium and cork cambium.
(xii) In dicot stems, the cells of cambium present between primary xylem and primary phloem is the intrafascicular cambium.
(xiii) The cells of medullary rays adjoining interfascicular cambium become meristematic and form the intrafascicular cambium.
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