Tag: stem - external morphology

Quizzes (2) Questions (39)

Questions Related to stem - external morphology

Multiple choice botany stem - external morphology habit of plants plant classifications type of plants

Climbers are advanced than creepers. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Climbers are meant to be more advance than creepers as unlike them creepers evolve themselves and modify their parts to form special structure known as tendrils and climb up but creepers grow on ground and are not able to support their weight .

So the statement is True.

Multiple choice botany stem - external morphology habit of plants plant classifications type of plants

Read the following matches.

(i) Lily Compound tunicated bulb
(ii) Potato Tuber
(iii) Allium cepa Simple tunicated bulb
(iv) Allium sativum Scaly bulb

Which of these are correct?

  1. (i), (ii) and (iii)

  2. (ii), (iii) and (iv)

  3. (ii) and (iii)

  4. (iii) and (iv)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
 Lily  Scaly bulb (in which tunic cover is absent)
 Potato  Tuber
 Allium cepa (Onion)  Simple tunicated bulb
Allium sativum (Garlic)   Compound tunicated bulb

The bulb is a modification of underground stem. The bulb is divided into two categories: 1) Tunicated 2) Scaly/Imbricate. 

Tunicated is further divided into 1) Simple tunicated Bulb and 2) Compound Tunicated Bulb. 

So the correct option is "ii, iii ".

Multiple choice botany stem - external morphology habit of plants plant classifications type of plants

Date Palm is?

  1. Caudex

  2. Excurrent

  3. Deliquescent

  4. Culm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  1. The caudex is the axis of the plant of palm or fern that has a stem as well as root.
  2. The excurrent stem has the axis that is prolonged to form undivided main stem or trunk as in conifers.
  3. Deliquescent is the branching in which stem is not figured out as in deciduous trees.
  4. Culm is an aerial stem of grass.
So the correct option is 'Caudex'

Multiple choice botany stem - external morphology habit of plants plant classifications type of plants

Underground stems are primarily meant for

  1. Vegetative reproduction

  2. Perennation

  3. Protection from strong light

  4. Anaerobic respiration
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Underground stems are primarily modified for perennation, allowing the plant to survive unfavorable conditions, and often for food storage and vegetative propagation.

Multiple choice botany stem - external morphology habit of plants plant classifications type of plants

In one plant, underground stems are modified to store food and in another plant, the stem tendrils develop from axillary buds to help plant climb. They are

  1. Ginger, Cucumber

  2. Carrot, Jasmine

  3. Sweet Potato, Bougainvillea

  4. Opuntia, Eichhornia

  5. Sweet Potato, Mint
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ginger is a rhizome (underground stem for storage), and Cucumber is a plant that uses stem tendrils derived from axillary buds for climbing.

Multiple choice botany stem - external morphology habit of plants plant classifications type of plants

The special structures used by the climbers for climbing are

  1. Root

  2. Tendrils

  3. Stem

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Climbers are said to have a weak stem and cannot stand by their own so they evolve a mechanism and mostly modify either their leaves or part or leaf that helps them to climb the other plant or can attach with a wall or any other support.

So the correct option is 'Tendrils'.