NCERT anatomy flowering plant NEET 2021 mock tests papers,exams

Anatomy of Flowering Plants Mock Exam-13

Question No:1

Assertion: Intercalary meristem increase length of plant like apical meristems.
Reason: Intercalary meristem originates from the apical meristems.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:2

Assertion: The lenticel is meant for gaseous exchange.
Reason: Lenticel checks excessive evaporation of water.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:3

Assertion: Xerophytic leaves may contain stomatal crypts or sunken stomata.
Reason: Spongy parenchyma is more in Xerophytic leaves.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:4

Assertion: Isobilateral leaves are amphistomatic.
Reason: Mesophyll is not differentiated into palisade and spongy.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:5

Assertion: Trichomes helps in preventing water loss due to transpiration.
Reason: On the stem epidermal hairs are called trichomes.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:6

Assertion: Growth rings are also called as annual rings.
Reason: Generally growth ring is formed in each year.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:7

Assertion: Heartwood is more durable than the sapwood.
Reason: Heartwood contain organic compound like tannins,resins,oil,gumsaromatic substances and essential oils make it hard and more durable.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:8

Assertion: Sugarcane shows Kranz anatomy.
Reason: In diocot leaves, bundle sheath cells lack chloroplasts.

[A] If both the assertion and the reason are assertion
[B] If both the assertion and reason/are true correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:9

Kranz anatomy is one of the characteristics of the leaves of

[A] Potato
[B] Wheat
[C] Sugarcane
[D] Mustard



Question No:10

The chief water conducting elements of xylem in gymnosperms are

[A] Vessels
[B] Fibres
[C] Transfusion tissue
[D] Tracheids



Question No:11

Which one of the following is not a lateral meristem?

[A] Intrafascicular cambium
[B] Interfascicular cambium
[C] Phellogen
[D] Intercalary meristem



Question No:12

Heartwood differs from sapwood in:

[A] Presence of rays and fibres
[B] Absence of vessels and parenchyma
[C] Having dead and non-conducting elements
[D] Being susceptible to pests and pathogens



Question No:13

Some vascular bundles are described as open because these:

[A] Are surrounded by Pericycle but no endodermis
[B] Are capable of producing secondary xylem and phloem
[C] Possess conjunctive tissue between xylem and phloem
[D] Are not surrounded by Pericycle



Question No:14

In Kranz anatomy, the bundle sheath cells have

[A] Thin walls, many intercellular spaces and no chloroplasts
[B] Thick walls, no intercellular spaces and large number of chloroplasts
[C] Thin walls, no intercellular spaces and several chloroplasts
[D] Thick walls, many intercellular spaces and few chloroplasts