Anatomy of Dicots

Q. in a dicot stem is made up of collenchyma.

1. Hypodermis
2. Epidermis
3. Pith
4. Bundle sheath

Q. Which of the following is/are present in dicot stem but absent in monocot stem?

1. Hairs
2. Undifferentiated ground tissue
3. Cortex
4. Pith

Q.

What is the difference between aerenchyma and chlorenchyma?

Q. Most cells of endodermis have thickened strips due to deposition of suberin and lignin. They are called as .

1. pith
2. casparian strips
3. lignin strips
4. casparian rays

Q.

Difference between monocot and dicot root is in

1. Presence of xylem and phloem.

2. Pith

3. Number of xylem bundles

4. All of these

Q. Vascular bundles in a dicot stem are considered to be open because:

1. There are vessels with perforations.
2. The cambium is present.
3. Phloem is surrounded all around by xylem.
4. It is not conjoint.

Q.

Which of the following options are correct based on the statements given?

Statement 1: Gaseous exchanges in plants usually occur on the top side of leaves.

Statement 2: Tiny pores called stomata facilitate this exchange.

Statement 3: The gases exchanged are carbon dioxide and water vapor only.

1. Only statements 1 and 3 are correct.

2. Only statement 2 is correct.

3. All statements are correct.

4. Only Statement 2 is correct.

Q.

Passage cells are thin - walled cells found in

1. endodermis of roots facilitating rapid transport of water from cortex to pericycle

2. phloem elements that serve as entry points for substances for transport to other plant parts

3. central region of style through which the pollen tube grows towards the ovary

4. testa of seeds to enable emergence of growing embryonic axis during seed germination

Q. in the stem is involved in conduction of water and food radially across the stem.

1. Pith
2. Medullary rays
3. Cortex
4. Vascular bundle

Q.

Monocot stem has definite number of vascular bundles

1. True

2. False

Q.

How does the morphology of the leaf relate to its anatomy in dicots and monocots?

1. The venation of the leaf defines the arrangement of vascular tissue

2. The horizontal leaf of dicots produce more energy by photosynthesis as compared to the vertical leaf of monocots.

3. The monocots leaves have similar type of epidermis on both sides due to their vertical structure

4. All the above

Q. Casparian strip occurs in ________.

1. epidermis
2. pericycle
3. endodermis
4. cortex

Q.

Which of the following is not a function of the epidermis?

1. Absorption of water

2. Protection from pathogens

3. Exchange of gases

4. Prevention of loss of water

Q. The function of sieve tubes is to

1. Translocate water and minerals
2. Translocate organic food
3. Sieve the passing substances
4. Eliminate water from organic food

Q.

Vascular bundles in monocotyledons are considered closed because

1. xylem is surrounded all around by phloem

2. there is no cambium

3. there are no vessels with perforations

4. a bundle sheath surrounds each bundle

Q. The stele is composed of

1. vascular bundle
2. pith and vascular bundle
3. cortex and endodermis
4. pith and cortex

Q. A special type of parenchyma tissue that makes up the leaf mesophyll is _______

1. Aerenchyma
2. Prosenchyma
3. Chlorenchyma
4. Mesenchyma

Q. Conjoint, collateral, open and endarch vascular bundles are found in _____.

1. Monocot root
2. Dicot root
3. Dicot stem
4. Monocot stem