Tag: stem - external morphology

Questions Related to stem - external morphology

Climbers are advanced than creepers. 

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

  1. True

  2. False

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Correct Option: A
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.

Culm is found in

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

  1. Ginger

  2. Mango

  3. Bamboo

  4. Guava

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Correct Option: C
Explanation:

A culm is the aerial (above-ground) stem of a grass or sedge. It is derived from culmus, the Latin word for "stalk", and it originally referred to the stem of any type of plant. So bamboo have a culm.

so correct answer is C.

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?

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

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

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

  3. (ii) and (iii)

  4. (iii) and (iv)

Show answer
Correct Option: C
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 ".

Which of the following parts of plants in garlic and onion are edible?

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

  1. Underground stem

  2. Fleshy scale leaves

  3. Tunic

  4. Adventitious root

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Correct Option: A

A weak stem which itself coils around the support is called 

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

  1. Twiner

  2. Scrambler

  3. Liana

  4. None of the above

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Correct Option: A

Pisum sativum is a

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

  1. Climber

  2. Tree

  3. Shrub

  4. Heterotroph

Show answer
Correct Option: A
Explanation:

Pisum sativum is a climber because it has a weak stem which needs support for growing upright. It has a soft green pliable stem which when grown in farms are given enough support system.

so, the correct answer is 'Climber'.

Date Palm is?

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

  1. Caudex

  2. Excurrent

  3. Deliquescent

  4. Culm

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Correct Option: A
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'

Underground stems are primarily meant for

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

  1. Vegetative reproduction

  2. Perennation

  3. Protection from strong light

  4. Anaerobic respiration

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Correct Option: B

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

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

  1. Ginger, Cucumber

  2. Carrot, Jasmine

  3. Sweet Potato, Bougainvillea

  4. Opuntia, Eichhornia

  5. Sweet Potato, Mint

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Correct Option: A

The special structures used by the climbers for climbing are

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

  1. Root

  2. Tendrils

  3. Stem

  4. None of the above

Show answer
Correct Option: B
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'.