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Which one of the following is not associated with reproduction? (a) A new leaf coming out of a tree branch. (b) A dog giving birth to a puppy. (c) A seed growing into a plant. (d) Chick hatching from an egg.

a) A new leaf coming out of a tree branch A new leaf coming out of the branch is growth and not reproduction as it does not give rise to a new... View Article

Choose the set that represents only the biotic components of a habitat. (a) Tiger, Deer, Grass, Soil (b) Rocks, Soil, Plants, Air (c) Sand, Turtle, Crab, Rocks (d) Aquatic plant, Fish, Frog, Insect

d) Aquatic plant, Fish, Frog, Insect The biotic or living components of a habitat include the plants, animals, decomposers, microflora and... View Article

Which of the following is an incorrect statement about excretion? (a) Excretion takes place in plants. (b) Excretion takes place both in plants and animals. (c) Excretion is the process of getting rid of excess water only. (d) Secretion is one method of excretion.

c) Excretion is the process of getting rid of excess water only. The human excretory system organs include: A pair of kidneys A pair of... View Article

Which of the following is correct for respiration in plants? (a) Respiration takes place only during day time. (b) Respiration takes place only during the night. (c) Respiration takes place both during day and night. (d) Respiration takes place only when plants are not making food.

c) Respiration takes place both during day and night. Respiration is a chain of chemical reactions that enables all living entities to... View Article

Which of the following is not an example of the response to stimulus? (a) Watering in the mouth when we see delicious food items. (b) Closing of leaves of Mimosa plant when touched. (c) Shutting our eyes when an object is suddenly thrown in our direction. (d) A chick hatching out of an egg.

d) A chick hatching out of an egg Watering in the mouth at the sight of delicious food, Closing of Mimosa leaves when touched, Shutting our... View Article

Earthworms breathe through their (a) skin (b) gills (c) lungs (d) stomata

a) Skin Earthworms do not have lungs or gills, rather they breathe through their moist skin. Their body is covered by a mucus layer. Air... View Article

Which of the following are characteristics of living beings? (i) Respiration (ii) Reproduction (iii) Adaptation (iv) Excretion Choose the correct answer from the options below. (a) (i), (ii) and (iv) only (b) (i) and (ii) only (c) (ii) and (iv) only (d) (i), (ii), (iii) and (iv)

d) (i), (ii), (iii) and (iv) Respiration (exchange of gases and metabolism), reproduction (to produce young ones of the same type), adaptation... View Article

Boojho comes across an animal having a stream-lined and slippery body. What is the habitat of the animal? (a) Water (b) Desert (c) Grassland (d) Mountain

a) Water A stream-lined and slippery body is the characteristic feature of aquatic organisms. The stream-lined body of aquatic animals helps... View Article

Following are some features of plants. (i) They lose a lot of water through transpiration. (ii) Their leaves are always broad and flat. (iii) They lose very little water through transpiration. (iv) Their roots grow very deep into the soil. Which of the combination of the above features are typical of desert plants? (a) (i) and (ii) (b) (ii) and (iv) (c) (ii) and (iii) (d) (iii) and (iv)

d) (iii) and (iv) Desert plants lose very little or no water through transpiration as their leaves are small and or are modified to spines,... View Article

Which of the following cannot be called a habitat? (a) A desert with camels (b) A pond with fishes (c) A jungle with wild animals (d) Cultivated land with grazing cattle

d) Cultivated land with grazing cattle. Habitat is said to be a natural environment where an organism lives. The grazing cattle do not live on... View Article

In the given figure there are two snakes of the same size slithering on the sand. Can you identify which of them would move faster and why?

Snake A will move faster than snake B. Since a snake form loops in its body while slithering. Each loop of the snake gives it a forward push by... View Article

How is the skeleton of a bird well-suited for flying?

Birds can fly because their bodies are well suited for flying. Their bones are hollow and light. The bones of hind limbs are typical for... View Article

Read the following paragraph and fill in the blanks using the words you unscrambled. (a) and (b) form the skeleton of the human body. They provide the framework, give (c) __to the body and help in (d) _. They protect the (e) _. The bones are moved by alternate (f) _ and (g) _of two sets of (h) _ attached to them.

Bones and cartilage form the skeleton of the human body. They provide the framework, give shape to the body and help in movement. They protect... View Article

Unscramble the jumbled words and write them in the blank spaces provided. (i) neosb …………………………. (ii) tnemevom ……………………….. (iii) iontcaronct …………………….. (iv) lsecsum …………………………. (v) arctigeal ……………………… (vi) epahs……………………….. (vii) sangro inerlant………………… (viii) laxaeriont ………………………

(i) bones (ii) movement (iii) contraction (iv) muscles (v) cartilage (vi) shape (vii) internal organs (viii) relaxation Bones provide shape to... View Article

Which type of movement would have been possible if (a) our elbow had a fixed joint? (b) we were to have a ball and socket joint between our neck and head.

a) There will be no movement in our elbow. The entire hand only will show the movement. b) If there were ball and socket joint in our neck and... View Article

Bones are hard structures and cannot be bent. But, we can still bend our elbow, knee, etc. How is this possible?

The place where the two bones meet is known as the joint.A joint, also known as an articulation or articular surface, is a connection that... View Article

Boojho fell off a tree and hurt his ankle. On examination, the doctor confirmed that the ankle was fractured. How was it detected?

Doctor used X-ray technique to detect the injuries of Boojho. X-ray machines are used to examine the desired internal structure of body.They are... View Article

Given below is a list of different types of movements in animals. [Running, Jumping, Walking, Slithering, Crawling, Flying, Swimming, Creeping] Write the types of movements seen in each animal. (a) Duck (b) Horse (c) Kangaroo (d) Snail (e) Snake (f) Fish (g) Human beings (h) Cockroach

a) Duck swimming/walking b) Horse Running c) Kangaroo Jumping d) Snail Slithering e) Snake slithering f) Fish Swimming g)... View Article

Write the type of joint which is used for each of the following movements. (a) A cricket bowler bowls the ball. (b) A girl moves her head in right and left direction. (c) A person lifts weights to build up his biceps.

(a) Ball and Socket joint The ball and socket joint is a type of synovial joints in which one bone is hooked into the hollow space of another... View Article

Provide one-word answers to the statements given below. 1) A joint which allows movement in all directions. 2) A hard structure that forms the skeleton. 3) Part of the body with a fixed joint. 4) Help in the movement of the body by contraction and relaxation. 5) Bones that join with chest bone at one end and to the backbone at the other end. 6) A framework of bones which gives shape to our body. 7) Bones which enclose the organs of our body that lie below the abdomen. 8) Joint where our neck joins the head. 9) Part of the skeleton that forms the earlobe.

1. Ball and socket joint The ball and socket joint is a type of synovial joints in which one bone is hooked into the hollow space of another... View Article

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