Respiration in Plants - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of glycolysis, Krebs cycle, and the ETC.
Breathing and Exchange of Gases - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of respiratory volumes, oxygen dissociation, and gas transport.
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Practice questions testing deep understanding of phytohormones, vernalization, and photoperiodism.
Q1. A gardener wants a bushy, dense hedge. However, the hedge plants keep growing tall and straight with very few side branches. An agricultural expert advises the gardener to regularly "prune" (cut off) the very top tips of the plants. Explain the hormonal mechanism (Apical Dominance) behind why this advice will work.
Q2. Certain winter varieties of wheat must be planted in autumn; they germinate, survive the freezing winter as small seedlings, and then resume growth and flower in the spring. If a farmer accidentally plants this winter wheat in the warm spring, it will grow into a large plant but will absolutely refuse to flower. Identify the biological phenomenon at play and explain why the plant won't flower.
Q3. Assertion (A): Abscisic Acid (ABA) is widely known as the "stress hormone" in plants. Reason (R): During severe drought conditions, ABA is rapidly synthesized in the leaves and forces the stomata to close immediately, preventing fatal water loss through transpiration.
/Class-11/Competency-Based-Questions/4.3_Plant_Growth_and_Development_CBQ.mdxRespiration in Plants - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of glycolysis, Krebs cycle, and the ETC.
Breathing and Exchange of Gases - Competency Based & Assertion-Reasoning Questions
Practice questions testing deep understanding of respiratory volumes, oxygen dissociation, and gas transport.