Vidaara.orgClass 11 · Mathematics
CodeVID-M11-WS
Morphology of Flowering Plants — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
The study of the external form and structure of plants is:
- A.Anatomy
- B.Morphology
- C.Physiology
- D.Ecology
2.
The tap root system is characteristic of:
- A.Monocots
- B.Dicots
- C.Algae
- D.Fungi
3.
Roots that grow upward for gas exchange in mangroves are:
- A.Prop roots
- B.Pneumatophores
- C.Stilt roots
- D.Tuberous roots
4.
A potato is a modified:
- A.Root
- B.Underground stem (tuber)
- C.Leaf
- D.Fruit
5.
Stem tendrils, as in grapevine, help the plant to:
- A.Store food
- B.Climb
- C.Breathe
- D.Reproduce
6.
The three parts of a typical leaf are leaf base, lamina and:
- A.Node
- B.Petiole
- C.Internode
- D.Sepal
7.
Parallel venation is usually seen in:
- A.Dicots
- B.Monocots
- C.Mosses
- D.Fungi
8.
The arrangement of leaves on a stem is called:
- A.Aestivation
- B.Phyllotaxy
- C.Placentation
- D.Venation
9.
In a racemose inflorescence, the older flowers are at the:
- A.Top/centre
- B.Base (acropetal order)
- C.Inside the fruit
- D.Root
10.
The male reproductive whorl of a flower is the:
- A.Calyx
- B.Corolla
- C.Androecium
- D.Gynoecium
11.
The arrangement of sepals or petals in the floral bud is called:
- A.Placentation
- B.Aestivation
- C.Venation
- D.Phyllotaxy
12.
The arrangement of ovules within the ovary is:
- A.Aestivation
- B.Placentation
- C.Phyllotaxy
- D.Venation
13.
Pea and gram belong to which family?
- A.Solanaceae
- B.Fabaceae
- C.Liliaceae
- D.Poaceae
14.
Tomato and brinjal belong to the family:
- A.Fabaceae
- B.Solanaceae
- C.Liliaceae
- D.Asteraceae
15.
Onion and garlic are members of the family:
- A.Liliaceae
- B.Fabaceae
- C.Solanaceae
- D.Brassicaceae
Section B — Challenge / Olympiad (2 marks each)
6 × 2 = 12 marks
16.
A plant has a fibrous root system, parallel venation and trimerous flowers. It is most likely a:
- A.Monocot
- B.Dicot
- C.Gymnosperm
- D.Fern
17.
Carrot and sweet potato both store food, but the carrot is a modified root while the sweet potato is a modified root too — what general purpose do such modifications serve?
- A.Storage of food (and water)
- B.Climbing
- C.Breathing
- D.Photosynthesis only
18.
Why is the order of flower opening (acropetal vs basipetal) useful in classifying inflorescences?
- A.It reflects whether the main axis keeps growing or ends in a flower
- B.It shows the flower colour
- C.It shows leaf number
- D.It has no meaning
19.
A floral formula and a floral diagram together are useful because they:
- A.Summarise the number, fusion and arrangement of floral parts compactly
- B.Show the root system
- C.Indicate the fruit's taste
- D.Replace the need for the flower
20.
The Fabaceae are agriculturally vital partly because their roots host bacteria that:
- A.Fix atmospheric nitrogen, enriching the soil
- B.Produce antibiotics
- C.Cause disease
- D.Make the fruit a berry
21.
Two flowers both have fused petals and axile placentation, but one is regular (actinomorphic) and the other is irregular (zygomorphic). The zygomorphic one is more likely a:
- A.Fabaceae (pea) flower
- B.Solanaceae (tomato) flower
- C.Liliaceae (onion) flower
- D.Grass flower
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Morphology
- (B) Dicots
- (B) Pneumatophores
- (B) Underground stem (tuber)
- (B) Climb
- (B) Petiole
- (B) Monocots
- (B) Phyllotaxy
- (B) Base (acropetal order)
- (C) Androecium
- (B) Aestivation
- (B) Placentation
- (B) Fabaceae
- (B) Solanaceae
- (A) Liliaceae
Section B — Challenge / Olympiad (2 marks each)
- (A) Monocot
- (A) Storage of food (and water)
- (A) It reflects whether the main axis keeps growing or ends in a flower
- (A) Summarise the number, fusion and arrangement of floral parts compactly
- (A) Fix atmospheric nitrogen, enriching the soil
- (A) Fabaceae (pea) flower
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