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If you happen to go to a desert, what changes do you expect to observe in the urine you excrete? You would (i) excrete a small amount of urine (ii) excrete a large amount of urine (iii) excrete concentrated urine (iv) excrete very dilute urine Which of the above would hold true? (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv) (d) (i) and (ii)

a) (i) and (iii) Explanation A desert ecosystem is hot and dry and water is lost rapidly from the body... View Article

Although organisms die, their kind continues to live on earth. Which characteristic of living organisms makes this possible? (a) Respiration (b) Reproduction (c) Excretion (d) Movement

b) Reproduction Explanation Reproduction is essential for organisms. The organisms reproduce to produce young ones like them. It helps to carry... View Article

Choose the odd one out from below with respect to reproduction. (a) Eggs of hen (b) Seeds of plants (c) Buds of potato (d) Roots of mango tree

d) Roots of mango tree Explanation Buds of potato produces a new potato plant. It is a type of vegetative... View Article

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 Explanation A new leaf coming out of the branch is... 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 Explanation The biotic or living components of a habitat include the plants, animals, decomposers,... 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. Explanation The human excretory system organs include: A... 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. Explanation Respiration is a chain of chemical reactions that enables all... 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 Explanation Watering in the mouth at the sight of delicious food, Closing... View Article

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

a) Skin Explanation Earthworms do not have lungs or gills, rather they breathe through their moist skin. Their body is... 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) Explanation Respiration (exchange of gases and metabolism), reproduction (to produce young ones of the... 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 Explanation A stream-lined and slippery body is the characteristic feature of aquatic organisms. The stream-lined body of aquatic... 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) Explanation Desert plants lose very little or no water through transpiration as their leaves are small... 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. Explanation Habitat is said to be a natural environment where an organism lives. The... 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... 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... 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... 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 Importance of bones... 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... 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... 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... View Article

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