NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANATOMY OF FLOWERING PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
CORTEX HAS THREE LAYERS LIKE HYPODERMIS, CORTICAL LAYERS AND ENDODERMIS IN
A
DICOT LEAF
B
DICOT STEM
C
MONOCOT STEM
D
MONOCOT ROOT
Explanation: 

Detailed explanation-1: -Solution : In dicot stem, the cells arranged in multiple layers between epidermis and pericycle constitute the cortex. It consists of three-sub-zone from outer to inner is hypodermis, cortical layer and endodermis.

Detailed explanation-2: -The cortex is a ground tissue region found in dicot stems, located between the outer epidermis and the inner vascular structures. It is primarily composed of parenchyma cells, and it may contain sclerenchyma and collenchyma cells in dicot stems.

Detailed explanation-3: -The cortex may consist of one or a combination of three major tissues: parenchyma, collenchyma and sclerenchyma.

Detailed explanation-4: -In monocot stems and roots, the cortex is parenchymatous while in dicot stems, the cortex is differentiated into three sub-zones which are hypodermis, general cortex, and endodermis.

Detailed explanation-5: -Middle cortex of dicot stem is made up of few layers of chlorenchyma cells. It is involed in photosynthesis due to the presence of chloroplast.

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