Home
Class 11
BIOLOGY
Assertion : Fruitcose lichens have the s...

Assertion : Fruitcose lichens have the simplest thallus.
Reason : The thallus is attached only at the base by a flattened disc.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If the assertion is false but reason is true

Text Solution

Verified by Experts

The correct Answer is:
D

Fruticose lichens have a most complex thallus which is slender and freely branched. The branches may be cylindrical or ribbon-like and form thread-like or twig-like tufts. The thallus is attached only at the base by a flattened disc.
Promotional Banner

Topper's Solved these Questions

  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    ERRORLESS |Exercise Excretory Products And Their Elimination|224 Videos
  • LOCOMOTION AND MOVEMENT

    ERRORLESS |Exercise Locomotion And Movement|208 Videos

Similar Questions

Explore conceptually related problems

Assertion : Kinetochor helps in the movement of chromosomes. Reason : It has points for attachment of microtubules .

Assertion : Fruitcose are well branched leafy lichens. Reason : These lichens are upright and have pendulous organisation and are attached to substratum by a discoid structure.

Assertion : Pituitary is attached to hypothanlamus by a vein. Reason : This attachment is done through a hypophysial portal vein.

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c ) If assertion is true but reason is false. (d) If assertion and reason are false. Q. Assertion: Lead is more elastic than rubber. Reason: if the same load is attached to lead and rubber wires of the same cross-sectional area, the strain of lead is very much less than that of rubber.

Assertion : Metals are good conductors of electricity. Reason : Bromine is the only liquid metal.

Assertion: Lichens are the plants growing perched on other plants. Reason: Lichens unitedly make association with algae annd fungi and show mutualism.

Assertion : Universe is expanding. Reason : The result is based on red shift in the spectra of galaxies.