Botany MCQs
Topic Notes: Botany
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
31
What structure typically surrounds the ovules in gymnosperms?
Answer:
extra integuments
In gymnosperms, the ovule is protected by one or more layers of tissue known as integuments. These integuments eventually develop into the seed coat after fertilization. The presence of these protective layers is a key feature of seed-bearing plants, providing defense for the developing embryo against desiccation and mechanical damage before the seed is dispersed.
32
What is the characteristic shape of leaves in most conifers?
Answer:
needles
Conifers are well-adapted to various environments, and their leaves are typically modified into needles or scales. This shape helps reduce water loss through transpiration, which is an important adaptation for survival in cold or dry climates where water may be seasonally unavailable. The reduced surface area is a key feature of the coniferous leaf morphology.