HomeTestsSearchRankProfile
mediumMCQBiologyBiology
1 mark

Heartwood differs from sapwood in:

  1. A
    Being susceptible to pests and pathogens.
  2. B
    Presence of rays and fibres.
  3. C
    Absence of vessels and parenchyma.
  4. D
    Having dead and non-conducting elements.

Solution & Step-by-step Explanation

Heartwood is the older, central portion of a woody stem. It is characterized by the deposition of organic compounds (tannins, resins, oils), making it dark, hard, and resistant to pests. Its vessels are blocked by tyloses, making it non-conducting and dead. Sapwood is the younger, peripheral, conducting part.

Practice this question

Try it yourself before checking the explanation above.

Heartwood differs from sapwood in:
A
Being susceptible to pests and pathogens.
B
Presence of rays and fibres.
C
Absence of vessels and parenchyma.
D
Having dead and non-conducting elements.

Share This Question

Plant AnatomySecondary GrowthHeartwood

Related Questions

mediumMCQ

The main organelle involved in modification and routing of newly synthesized proteins to their destinations is :

mediumMCQ

There are two opposing views about origin of Modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variations of DNA however suggested African origin of Modern man. What kind of observation on DNA variation could suggest this ?

easyMCQ

The world's highly prized wool yielding 'Pashmina' breed is :

mediumMCQ

Grey crescent is the area :

mediumMCQ

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :

mediumMCQ

There exists a close association between the alga and the fungus within a lichen. The fungus :

Ready for a Full Test?

Practice with timed mock tests and track your performance across Biology.

Browse TestsLeaderboard

Discussion