Plant Morphology - Types and Modifications

Covers classification of plants by life span and growth habit, stem modifications (underground stems, tendrils, phylloclades), and anatomical structures for class-XI students

25 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

Find the wrong statement in the following.

  1. Animal fibres are proteins
  2. Plant fibres are fats
  3. Rearing of silk worms is called Sericulture
  4. Separation of silk fibre from cocoon is called Reeling
Question 2 Multiple Choice (Single Answer)

Small plants which live for one or two seasons are

  1. Herbs
  2. Shrubs
  3. Trees
  4. Algae
Question 3 Multiple Choice (Single Answer)

A plant has weak stem which can coil around an upright support. It is a

  1. Liane
  2. Twiner
  3. Climber
  4. Creeper
Question 4 Multiple Choice (Single Answer)

Which of the following can be related to the creepers?

  1. The stem is fragile
  2. They creep on the ground
  3. They have floating roots
  4. Both A and B
Question 5 Multiple Choice (Single Answer)

Stem tendrils occur in

  1. Smilax
  2. Gloriosa
  3. Vitis
  4. Lathyrus
Question 6 Multiple Choice (Single Answer)

Pea plant is a creeper.

  1. True
  2. False
Question 7 Multiple Choice (Single Answer)

Climbers are advanced than creepers. 

  1. True
  2. False
Question 8 Multiple Choice (Single Answer)

Culm is found in

  1. Ginger
  2. Mango
  3. Bamboo
  4. Guava
Question 9 Multiple Choice (Single Answer)

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)
Question 10 Multiple Choice (Single Answer)

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

  1. Underground stem
  2. Fleshy scale leaves
  3. Tunic
  4. Adventitious root
Question 11 Multiple Choice (Single Answer)

A weak stem which itself coils around the support is called 

  1. Twiner
  2. Scrambler
  3. Liana
  4. None of the above
Question 12 Multiple Choice (Single Answer)

Pisum sativum is a

  1. Climber
  2. Tree
  3. Shrub
  4. Heterotroph
Question 13 Multiple Choice (Single Answer)

Date Palm is?

  1. Caudex
  2. Excurrent
  3. Deliquescent
  4. Culm
Question 14 Multiple Choice (Single Answer)

Underground stems are primarily meant for

  1. Vegetative reproduction
  2. Perennation
  3. Protection from strong light
  4. Anaerobic respiration
Question 15 Multiple Choice (Single Answer)

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
Question 16 Multiple Choice (Single Answer)

The special structures used by the climbers for climbing are

  1. Root
  2. Tendrils
  3. Stem
  4. None of the above
Question 17 Multiple Choice (Single Answer)

Which of the following is not a creeper?

  1. Pumpkin
  2. Watermelon
  3. Sweet Potato
  4. Grapevine
Question 18 Multiple Choice (Single Answer)

Which of the following plants possesses culm?

  1. Cuscuta
  2. Zingiber
  3. Bamboo
  4. Cocos
Question 19 Multiple Choice (Single Answer)

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by :

  1. Position of protoxylem
  2. absence of secondary xylem
  3. Absence of secondary phloem
  4. Presence of cortex
Question 20 Multiple Choice (Single Answer)

Following are the comparisons between phylloclades and cladodes (cladophylls).

Phylloclade Cladode
(i) Both main stem and branches are modified to function like leaves. Only the branches are modified to take over the function of leaves.
(ii) Phylloclade has limited or definite growth. Cladode has unlimited or indefinite growth.
(iii) It consist of several nodes and internodes.  It is usually one internode long
(iv) True leaves are commonly caducous. True leaves are either reduced to scales or modified to spines.
(v) Example: Rescus aculeatus, Asparagus etc. Example:Opuntia, Euphorbia royleana etc.

Pick up the wrong difference and select the correct option.

  1. (i) and (ii)
  2. (ii) and (v)
  3. (iii) and (v)
  4. (ii) and (iv)
Question 21 Multiple Choice (Single Answer)

From the following, which plant has a disk-like stem?

  1. Pineapple
  2. Mango tree
  3. Banyan tree
  4. Onion
Question 22 Multiple Choice (Single Answer)

One internode long runner stem of aquatic plants is called

  1. Stolon
  2. Trailer
  3. Offset
  4. None of the above
Question 23 Multiple Choice (Single Answer)

Succulent stem occurs in

  1. Pisum
  2. Casuarina
  3. Euphorbia
  4. Oxalis
Question 24 Multiple Choice (Single Answer)

Choose the correct answers from the alternatives given.
Annual rings are the number of

  1. Rings of vascular bundles in a monocot stem
  2. Layers of secondary xylem in a stem
  3. Internodes in a stem
  4. Both (b) and (c)
Question 25 Multiple Choice (Single Answer)

Choose the correct answers from the alternatives given.
During the secondary growth in the dicotyledonous stems the cork cambium gives rise to

  1. Secondary xylem and secondary phloem
  2. Secondary cortex and cork
  3. Pith and medullary rays
  4. Multicellular hairs