0

Plant Anatomy

Description: Proteins
Number of Questions: 15
Created by:
Tags: Xylem root stem monocot dicot Root Roots
Attempted 0/15 Correct 0 Score 0

Which of the following is an all-root plant?

  1. Utricularia

  2. Banyan

  3. Podostemon

  4. Mimosa


Correct Option: C
Explanation:

Podostemon is an all-root plant.

In which of the following plants are roots absent?

  1. Monotropa

  2. Wolffia arhiza

  3. Oak

  4. Grass


Correct Option: B
Explanation:

It is a free-floating aquatic plant.

Where is the connective tissue present in a dicot root?

  1. Just below epiblema

  2. Between xylem and phloem

  3. In the central part of stele

  4. Outside cortex


Correct Option: B
Explanation:

Connective tissue is present between xylem and phloem.

Which of the following is not a characteristic of a dicot root?

  1. Endodermal cells are barrel-shaped.

  2. Radial walls of endodermis contain casparian strip.

  3. It has less developed pith.

  4. It has more than 8 vascular bundles.


Correct Option: D
Explanation:

A dicot root has only 2 to 6 vascular bundles.

Which of the following is/are absent in monocot roots?

  1. Barrel-shaped cells

  2. Unicellular root hairs

  3. Phloem parenchyma

  4. Exarch xylem


Correct Option: C
Explanation:

Phloem parenchyma is absent in monocot roots. Phloem of the monocot roots consists of only companion cells and sieve tubes.

From which layer do lateral roots arise?

  1. Epiblema

  2. Endodermis

  3. Pericycle

  4. Connective tissue


Correct Option: C
Explanation:

Lateral roots arise from pericycle.

Multicellular hairs are found in the

  1. stem of maize

  2. stem of sunflower

  3. root of pea

  4. root of maize


Correct Option: B
Explanation:

Multicellular hairs are found in the stem of sunflower.

In which of the following is pith absent?

  1. Sunflower stem

  2. Maize stem

  3. Maize root

  4. Pea root


Correct Option: B
Explanation:

Pith is absent in maize stem.

Match the following:

 
(i) Epidermis (a) Medulla
(ii) Endodermis (b) Stele
(iii) Pericycle (c) Root hairs
(iv) Pith (d) Casparian strip
  1. (i) - d, (ii) - c, (iii) - a, (iv) - b

  2. (i) - c, (ii) - d, (iii) - b, (iv) - a

  3. (i) - b, (ii) - a, (iii) - c, (iv) - d

  4. (i) - a, (ii) - b, (iii) - d, (iv) - c


Correct Option: B
Explanation:

It is the correct pairing.

Which of the following is the correct sequence of structural features in T.S. of the dicot root?

  1. Epidermis - Cortex - Endodermis - Pericycle

  2. Epiblema - Cortex - Endodermis - Pericycle

  3. Pericycle - Epiblema - Cortex - Endodermis

  4. Epiblema - Hypodermis - Endodermis - Pericycle


Correct Option: B
Explanation:

This is a correct sequence as epiblema forms the outer layer, followed by cortex, endodermis and pericycle sequentially.

Cambium strip is found

  1. between xylem and phloem of sunflower stem

  2. between xylem and phloem of maize stem

  3. below the epidermis of sunflower stem

  4. between xylem and phloem of monocot root


Correct Option: A
Explanation:

Cambium strip is found between xylem and phloem of sunflower stem.

Vascular bundles are conjoint, collateral, open and endarch in the

  1. monocot stem

  2. monocot root

  3. dicot stem

  4. dicot root


Correct Option: C
Explanation:

Vascular bundles are conjoint, collateral, open and endarch in the dicot stem.

Which of the following is/are situated between hypodermis and endodermis of dicot stem?

  1. Pericycle

  2. Vascular bundles

  3. General cortex

  4. Pith


Correct Option: C
Explanation:

General cortex is situated between hypodermis and endodermis of the dicot stem.

The type of vascular bundles in root are

  1. collateral

  2. bicollateral

  3. radial

  4. conjoint


Correct Option: C
Explanation:

Vascular bundles are radial in the root, i.e. xylem and phloem are alternately arranged on different radii.

Polyarch xylem and siphonostele are characteristics of

  1. dicot stem

  2. monocot root

  3. monocot stem

  4. dicot root


Correct Option: B
Explanation:

Polyarch xylem and eustele (siphonostele) are found in monocot roots.

- Hide questions