The protein that gives red blood cells their flexibility and shape is: MCQ with Answer and Explanation

Explanation:
Iodine solution (iodine in potassium iodide) gives a blue-black color with starch due to the formation of a polyiodide chain complex with amylose. Benedict's tests for reducing sugars, Biuret for proteins, Sudan III for lipids. The iodine test is specific and sensitive for starch.

Explanation:
Collenchyma is a simple permanent tissue characterized by cells with thickened corners due to the deposition of cellulose and pectin. It provides mechanical support, tensile strength, and flexibility to the growing parts of the plant (like stems and petioles), allowing them to bend without breaking. Parenchyma is for storage, and sclerenchyma provides rigid support.

Explanation:
Self-pollination (autogamy) occurs within the same flower or between flowers of the same plant. Cross-pollination (allogamy) involves different plants. Hydrophily is pollination by water, anemophily by wind. Self-pollination ensures genetic uniformity, while cross-pollination promotes variation. Cleistogamous flowers (e.g., groundnut) are obligate self-pollinators.