MCQ
As a tree grows older, which increases rapidly in thickness
- ✓Its heart wood
- BIts cortex
- CIts sap wood
- DIts phloem
✓
Answer
Correct option: A.
Its heart wood
a
(a) Heartwood $(duramen)$ is a hard and dark wood which are physiologically inactive $(almost\ dead).$
(a) Heartwood $(duramen)$ is a hard and dark wood which are physiologically inactive $(almost\ dead).$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Distinct alternation of generation is found in
If $'8'$ Drosophila in a laboratory population of $'80'$ died during a week, the death rate in the population is
→Which is correct for root hair?
The hormone involved in metabolism of food material in cereal grain during germination, is
The filaments associated with cilia and flagella are constituted by
Raw material for decomposition represented by dead organic matter is
Aerobic respiration is called
What causes a green plant to bend towards light as it grows
Heart wood or duramen is
The diagram given below represent a filuid mosaic model of plasma membrance. Match the components marked as $A, B, C, D$ and $E$ in the diagram below from the list $(i)$ to $(vii)$.
→$(i)$ Sugar $(ii)$ Protein $(iii)$ Lipid bilayer $(iv)$ Integral protein $(v)$ Cytoplasm $(vi)$ Cell wall $(vii)$ External protein