Morphology of Flowering Plants Chapter-Wise Test 10

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following correctly describes free central placentation?

Ovules are attached along the margins of the ovary
Ovules are attached to a central axis without septa
Ovules are attached to the inner wall of a unilocular ovary
Ovules are attached to the basal region of the ovary
2

In free central placentation, as seen in Dianthus, ovules are attached to a central axis, and the ovary lacks septa.

What is the function of stipules in some dicot leaves?

They help in leaf attachment
They protect the leaf bud
They store food
They conduct water
2

Stipules are small leaf-like structures at the base of petioles in some dicots that protect the young leaf buds.

Which type of aestivation is characterized by one petal overlapping the other in one particular direction?

Valvate
Twisted
Imbricate
Vexillary
2

Twisted aestivation, as seen in china rose, occurs when one petal overlaps the next one in a specific direction.

Which of the following statements about venation is incorrect?

Parallel venation is seen in monocots
Reticulate venation is seen in dicots
Mango exhibits parallel venation
Grass exhibits parallel venation
3

Mango exhibits reticulate venation, a characteristic feature of dicot plants.

Which of the following statements about phyllotaxy is incorrect?

Alternate phyllotaxy is seen in sunflower
Whorled phyllotaxy is found in Alstonia
Opposite phyllotaxy is found in guava
All plants have whorled phyllotaxy
4

Not all plants exhibit whorled phyllotaxy; different species may have alternate, opposite, or whorled arrangements.

Which of the following statements about leaf venation is correct?

Parallel venation is common in monocots
Reticulate venation is characteristic of monocots
Mango exhibits parallel venation
Grass exhibits reticulate venation
1

Parallel venation, where veins run parallel to each other, is a characteristic feature of monocots.

Why do monocot plants generally lack a prominent taproot system?

They do not have radicles in their seeds
Their primary root is short-lived and replaced by adventitious roots
They require a shallow root system for water absorption
They lack vascular tissues for deep root penetration
2

Monocots have a fibrous root system because their primary root is short-lived and is replaced by a cluster of adventitious roots arising from the stem base.

Which of the following statements about seeds is correct?

The radicle develops into the shoot
The plumule gives rise to the root
The cotyledons store food in dicots
Monocot seeds have two cotyledons
3

In dicot seeds, the cotyledons store food and provide nourishment to the developing embryo.

Which part of a dicot seed is responsible for food storage?

Endosperm
Cotyledons
Plumule
Radicle
2

In dicot seeds like gram and pea, the cotyledons store food and provide nourishment to the embryo.

Which part of the embryo emerges first during seed germination?

Plumule
Radicle
Cotyledons
Epicotyl
2

The radicle is the first part of the embryo to emerge during germination, developing into the root system.

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0