Vidaara.orgClass 11 · Mathematics
CodeVID-M11-WS
Structural Organisation in Animals — 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.
How many basic types of animal tissue are there?
- A.Two
- B.Three
- C.Four
- D.Five
2.
Tissue that covers body surfaces and lines organs is:
- A.Connective
- B.Epithelial
- C.Muscular
- D.Neural
3.
The most abundant tissue, which links and supports other tissues, is:
- A.Epithelial
- B.Connective
- C.Muscular
- D.Neural
4.
A ligament connects:
- A.Muscle to bone
- B.Bone to bone
- C.Nerve to muscle
- D.Skin to bone
5.
Blood is classified as which type of tissue?
- A.Epithelial
- B.Fluid connective tissue
- C.Muscular
- D.Neural
6.
Skeletal muscle is:
- A.Unstriated and involuntary
- B.Striated and voluntary
- C.Striated and involuntary
- D.Not contractile
7.
Neurons are the main cells of which tissue?
- A.Connective
- B.Muscular
- C.Neural
- D.Epithelial
8.
The earthworm belongs to phylum:
- A.Arthropoda
- B.Annelida
- C.Mollusca
- D.Chordata
9.
The reproductive band on segments 14-16 of an earthworm is the:
- A.Prostomium
- B.Setae
- C.Clitellum
- D.Gizzard
10.
A cockroach has how many pairs of legs?
- A.Two
- B.Three
- C.Four
- D.Five
11.
The cockroach excretes using:
- A.Kidneys
- B.Malpighian tubules
- C.Nephridia
- D.Skin
12.
Cockroaches breathe through air tubes called:
- A.Tracheae
- B.Lungs
- C.Gills
- D.Skin
13.
The frog is a:
- A.Reptile
- B.Cold-blooded amphibian
- C.Mammal
- D.Bird
14.
The frog's heart has:
- A.Two chambers
- B.Three chambers
- C.Four chambers
- D.One chamber
15.
Development in frogs passes through which larval stage?
- A.Caterpillar
- B.Tadpole
- C.Nymph
- D.Pupa
Section B — Challenge / Olympiad (2 marks each)
6 × 2 = 12 marks
16.
Adipose (fat) tissue is grouped under connective tissue mainly because it:
- A.Has cells spaced in a matrix and stores/supports
- B.Covers the body surface
- C.Contracts to cause movement
- D.Transmits impulses
17.
An earthworm is called a 'friend of the farmer' because it:
- A.Burrows and adds castings, improving soil aeration and fertility
- B.Eats crops
- C.Pollinates flowers
- D.Kills pests directly
18.
The cockroach's open circulatory system means that:
- A.Blood (haemolymph) flows freely through body spaces, not always in vessels
- B.Blood is always inside closed vessels
- C.It has no blood
- D.Blood flows only in the heart
19.
A frog can survive a dry, hot season buried in mud because it undergoes:
- A.Aestivation (summer sleep)
- B.Hibernation (winter sleep)
- C.Metamorphosis
- D.Moulting
20.
The frog's moist skin is important because it:
- A.Allows cutaneous respiration (gas exchange through the skin)
- B.Stores food
- C.Produces eggs
- D.Forms the skeleton
21.
Skeletal, smooth and cardiac muscles differ, but all three share the property of being:
- A.Contractile (able to shorten and produce movement)
- B.Voluntary
- C.Striated
- D.Found only in the heart
Answer Key
Section A — Multiple Choice (1 mark each)
- (C) Four
- (B) Epithelial
- (B) Connective
- (B) Bone to bone
- (B) Fluid connective tissue
- (B) Striated and voluntary
- (C) Neural
- (B) Annelida
- (C) Clitellum
- (B) Three
- (B) Malpighian tubules
- (A) Tracheae
- (B) Cold-blooded amphibian
- (B) Three chambers
- (B) Tadpole
Section B — Challenge / Olympiad (2 marks each)
- (A) Has cells spaced in a matrix and stores/supports
- (A) Burrows and adds castings, improving soil aeration and fertility
- (A) Blood (haemolymph) flows freely through body spaces, not always in vessels
- (A) Aestivation (summer sleep)
- (A) Allows cutaneous respiration (gas exchange through the skin)
- (A) Contractile (able to shorten and produce movement)
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