Grade 11 Biology: Morphology of Plants Practice Quiz (Set 1)

Question 1

Which root system develops directly from the elongation of the radicle in dicotyledonous plants?

Accepted Answer

A) Tap root system

Answer

B) Adventitious root system

Answer

C) Fibrous root system

Answer

D) Lateral root system

Question 2

Pneumatophores are specialized root structures modified primarily for which function?

Accepted Answer

C) Gaseous exchange and respiration

Answer

A) Storage of food reserve

Answer

B) Mechanical support against wind

Answer

D) Photosynthetic carbon fixation

Question 3

The heavy pillar-like hanging roots that provide mechanical support to a banyan tree are known as:

Accepted Answer

B) Prop roots

Answer

A) Stilt roots

Answer

C) Pneumatophores

Answer

D) Assimilatory roots

Question 4

The underground stem modification of potato specialized for food storage and bearing nodes called 'eyes' is a:

Accepted Answer

C) Tuber

Answer

A) Rhizome

Answer

B) Bulb

Answer

D) Corm

Question 5

Hard, straight, and pointed structures developed from axillary buds in plants like Citrus and Bougainvillea are called:

Accepted Answer

B) Thorns

Answer

A) Tendrils

Answer

C) Spines

Answer

D) Prickles

Question 6

When a pair of leaves arises at each node and lie opposite to each other, such as in Calotropis and Guava, the pattern is called:

Accepted Answer

B) Opposite phyllotaxy

Answer

A) Alternate phyllotaxy

Answer

C) Whorled phyllotaxy

Answer

D) Spiral phyllotaxy

Question 7

Parallel venation, where veins run parallel to each other within the lamina, is a characteristic feature of:

Accepted Answer

B) Monocotyledons

Answer

A) Dicotyledons

Answer

C) Ferns

Answer

D) Gymnosperms

Question 8

In which type of inflorescence does the main axis continue to grow indefinitely and flowers are borne laterally in acropetal succession?

Accepted Answer

B) Racemose

Answer

A) Cymose

Answer

C) Solitary terminal

Answer

D) Cyathium

Question 9

Flowers that can be divided into two equal radial halves in any radial plane passing through the center are called:

Accepted Answer

B) Actinomorphic

Answer

A) Zygomorphic

Answer

C) Asymmetric

Answer

D) Epigynous

Question 10

When the gynoecium occupies the highest position while other floral parts are situated below it, the flower is described as:

Accepted Answer

C) Hypogynous

Answer

A) Epigynous

Answer

B) Perigynous

Answer

D) Inferior

Question 11

Vexillary aestivation, consisting of one large standard petal, two lateral wings, and two fused keel petals, is characteristic of:

Accepted Answer

C) Fabaceae

Answer

A) Solanaceae

Answer

B) Liliaceae

Answer

D) Brassicaceae

Question 12

When stamens are attached to the petals of a flower, as observed in Brinjal, the condition is termed:

Accepted Answer

B) Epipetalous

Answer

A) Epiphyllous

Answer

C) Syngenesious

Answer

D) Polyadelphous

Question 13

When stamens are united into a single bundle or column, as seen in China rose, the condition is known as:

Accepted Answer

A) Monadelphous

Answer

B) Diadelphous

Answer

C) Polyadelphous

Answer

D) Gynandrous

Question 14

Which type of placentation features ovules attached to a central axis in a multilocular ovary, as in Tomato and Lemon?

Accepted Answer

B) Axile placentation

Answer

A) Marginal placentation

Answer

C) Parietal placentation

Answer

D) Free central placentation

Question 15

Placentation where the placenta forms a ridge along the ventral suture of the ovary and ovules are borne in two rows is:

Accepted Answer

C) Marginal

Answer

A) Parietal

Answer

B) Axile

Answer

D) Basal

Question 16

In which type of placentation are ovules borne on the central axis without any septa partitioning the ovary?

Accepted Answer

C) Free central placentation

Answer

A) Axile placentation

Answer

B) Parietal placentation

Answer

D) Basal placentation

Question 17

Fruits like Mango and Coconut that develop from monocarpellary superior ovaries and are single seeded are classified as:

Accepted Answer

B) Drupe

Answer

A) Berry

Answer

C) Capsule

Answer

D) Cypsela

Question 18

In maize grain, the outer proteinaceous layer separating the endosperm from the embryo is called the:

Accepted Answer

C) Aleurone layer

Answer

A) Scutellum

Answer

B) Coleoptile

Answer

D) Coleorhiza

Question 19

A persistent calyx and a bicarpellary syncarpous ovary with swollen placenta are diagnostic features of which family?

Accepted Answer

B) Solanaceae

Answer

A) Fabaceae

Answer

C) Liliaceae

Answer

D) Brassicaceae

Question 20

A floral structure with a perianth of 6 tepals (3+3), 6 stamens (3+3), and a tricarpellary syncarpous superior ovary is typical of:

Accepted Answer

C) Liliaceae

Answer

A) Solanaceae

Answer

B) Fabaceae

Answer

D) Poaceae

Grade 11 : Biology - Morphology of Plants (Set 1)

Grade 11 : Biology - Morphology of Plants (Set 1)— Questions & Detailed Solutions

Which root system develops directly from the elongation of the radicle in dicotyledonous plants?

Pneumatophores are specialized root structures modified primarily for which function?

The heavy pillar-like hanging roots that provide mechanical support to a banyan tree are known as:

The underground stem modification of potato specialized for food storage and bearing nodes called 'eyes' is a:

Hard, straight, and pointed structures developed from axillary buds in plants like Citrus and Bougainvillea are called:

When a pair of leaves arises at each node and lie opposite to each other, such as in Calotropis and Guava, the pattern is called:

Parallel venation, where veins run parallel to each other within the lamina, is a characteristic feature of:

In which type of inflorescence does the main axis continue to grow indefinitely and flowers are borne laterally in acropetal succession?

Flowers that can be divided into two equal radial halves in any radial plane passing through the center are called:

When the gynoecium occupies the highest position while other floral parts are situated below it, the flower is described as:

Vexillary aestivation, consisting of one large standard petal, two lateral wings, and two fused keel petals, is characteristic of:

When stamens are attached to the petals of a flower, as observed in Brinjal, the condition is termed:

When stamens are united into a single bundle or column, as seen in China rose, the condition is known as:

Which type of placentation features ovules attached to a central axis in a multilocular ovary, as in Tomato and Lemon?

Placentation where the placenta forms a ridge along the ventral suture of the ovary and ovules are borne in two rows is:

In which type of placentation are ovules borne on the central axis without any septa partitioning the ovary?

Fruits like Mango and Coconut that develop from monocarpellary superior ovaries and are single seeded are classified as:

In maize grain, the outer proteinaceous layer separating the endosperm from the embryo is called the:

A persistent calyx and a bicarpellary syncarpous ovary with swollen placenta are diagnostic features of which family?

A floral structure with a perianth of 6 tepals (3+3), 6 stamens (3+3), and a tricarpellary syncarpous superior ovary is typical of:

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Grade 11 : Biology - Morphology of Plants (Set 1)

Grade 11 : Biology - Morphology of Plants (Set 1)— Questions & Detailed Solutions

Which root system develops directly from the elongation of the radicle in dicotyledonous plants?

Pneumatophores are specialized root structures modified primarily for which function?

The heavy pillar-like hanging roots that provide mechanical support to a banyan tree are known as:

The underground stem modification of potato specialized for food storage and bearing nodes called 'eyes' is a:

Hard, straight, and pointed structures developed from axillary buds in plants like Citrus and Bougainvillea are called:

When a pair of leaves arises at each node and lie opposite to each other, such as in Calotropis and Guava, the pattern is called:

Parallel venation, where veins run parallel to each other within the lamina, is a characteristic feature of:

In which type of inflorescence does the main axis continue to grow indefinitely and flowers are borne laterally in acropetal succession?

Flowers that can be divided into two equal radial halves in any radial plane passing through the center are called:

When the gynoecium occupies the highest position while other floral parts are situated below it, the flower is described as:

Vexillary aestivation, consisting of one large standard petal, two lateral wings, and two fused keel petals, is characteristic of:

When stamens are attached to the petals of a flower, as observed in Brinjal, the condition is termed:

When stamens are united into a single bundle or column, as seen in China rose, the condition is known as:

Which type of placentation features ovules attached to a central axis in a multilocular ovary, as in Tomato and Lemon?

Placentation where the placenta forms a ridge along the ventral suture of the ovary and ovules are borne in two rows is:

In which type of placentation are ovules borne on the central axis without any septa partitioning the ovary?

Fruits like Mango and Coconut that develop from monocarpellary superior ovaries and are single seeded are classified as:

In maize grain, the outer proteinaceous layer separating the endosperm from the embryo is called the:

A persistent calyx and a bicarpellary syncarpous ovary with swollen placenta are diagnostic features of which family?

A floral structure with a perianth of 6 tepals (3+3), 6 stamens (3+3), and a tricarpellary syncarpous superior ovary is typical of:

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