The region of the root that provides protection to the growing tip is the:
A. Meristematic zone
B. Elongation zone
C. Root cap
D. Maturation zone
Answer: Option C
Solution (By JKSSB Mock Tests)
The root cap is a thimble-like mass of parenchyma cells covering the apical meristem, protecting it as the root pushes through the soil. It also secretes mucilage to ease passage. Cells are constantly sloughed off and replaced. The meristematic zone is where cells divide.
Explanation:
The cranium (skull) is composed of several bones fused together, encasing and protecting the brain. Vertebrae protect the spinal cord, sternum protects the heart and lungs anteriorly, pelvis supports abdominal organs and connects to legs. The cranium also provides attachment for muscles.
Explanation:
Vitamin E (Tocopherol) is a fat-soluble vitamin that acts primarily as a powerful antioxidant. It protects cell membranes from oxidative damage by neutralizing free radicals, which are unstable molecules that can damage cells. It also supports immune function and has anti-inflammatory properties. Deficiency is rare but can cause neurological problems and hemolytic anemia.
Explanation:
Budding is an asymmetric division where a new yeast cell forms as a small bud on the parent, eventually pinching off. Binary fission is symmetric splitting (bacteria), fragmentation is breaking into pieces, spore formation involves spores. Budding can occur in some hydra as well.
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