12th Grade > Biology
THE LIVING WORLD MCQs
The Living World, Living Organisms And Their Surroundings, Diversity In Living Organisms
Total Questions : 114
| Page 11 of 12 pages
Answer: Option A. -> Rainwater and snow to slide off easily from the leaves.
:
A
Plants use a wide variety of physical adaptations. Some of these adaptations include their shape, leaf type, root system, and color. Trees on the mountain are cone-shaped, have sloping branches and needle-shaped leaves. This helpsthe rainwater and snow to slide off easily from the leaves.
:
A
Plants use a wide variety of physical adaptations. Some of these adaptations include their shape, leaf type, root system, and color. Trees on the mountain are cone-shaped, have sloping branches and needle-shaped leaves. This helpsthe rainwater and snow to slide off easily from the leaves.
Answer: Option A. -> True
:
A
∙ Biotic factors include all the living organisms in a habitat i.e., plants, animals, fungi, etc. Abiotic factors include all the non-living things in a habitat i.e., air, water, sunlight, temperature, soil, etc.
∙ In an environment both abiotic and biotic components determine whether a species can sustain or not.
:
A
∙ Biotic factors include all the living organisms in a habitat i.e., plants, animals, fungi, etc. Abiotic factors include all the non-living things in a habitat i.e., air, water, sunlight, temperature, soil, etc.
∙ In an environment both abiotic and biotic components determine whether a species can sustain or not.
Answer: Option B. -> Lily
:
B
Terrestrial habit includes the ones onland, like forests, grasslands and deserts.Terrestrial animals or plants are organisms that live on land. Pines, oaks and cactus are terrestrial trees. Aquatic animals or plants are organisms thatwhich live in the water. Waterlily is a plant that is found in the water.
:
B
Terrestrial habit includes the ones onland, like forests, grasslands and deserts.Terrestrial animals or plants are organisms that live on land. Pines, oaks and cactus are terrestrial trees. Aquatic animals or plants are organisms thatwhich live in the water. Waterlily is a plant that is found in the water.
Answer: Option A. -> terrestrial
:
A
Plants andanimals that live on land have a terrestrial habitat. Forests, deserts and grasslands are examples of terrestrial habitats. Plants and animals that live in water have an aquatic habitat.
:
A
Plants andanimals that live on land have a terrestrial habitat. Forests, deserts and grasslands are examples of terrestrial habitats. Plants and animals that live in water have an aquatic habitat.
Answer: Option A. -> Desert plants
:
A
Leaves are very small or reduced to spines in desert plants. This helps in reducing loss of water from the leaves through transpiration. The leaf-like structure in cactus is the stem that carries out photosynthesis. It is covered by a waxy layer, which helps the plant to retain water.
:
A
Leaves are very small or reduced to spines in desert plants. This helps in reducing loss of water from the leaves through transpiration. The leaf-like structure in cactus is the stem that carries out photosynthesis. It is covered by a waxy layer, which helps the plant to retain water.
Answer: Option B. -> excretion
:
B
∙The process by which the living organism get rid of their waste is called excretion.
∙Digestion is the process during which food is broken down into nutrients.
∙Circulation is the process where the nutrients and oxygen are carried to all the cells by the blood.
∙Respiration is the process in which nutrients are broken down with the help of oxygen in the cells.
:
B
∙The process by which the living organism get rid of their waste is called excretion.
∙Digestion is the process during which food is broken down into nutrients.
∙Circulation is the process where the nutrients and oxygen are carried to all the cells by the blood.
∙Respiration is the process in which nutrients are broken down with the help of oxygen in the cells.
Answer: Option A. -> habitat
:
A
The environment in which an organism lives is called its habitat. The organisms depend on their habitat for their food, water, air, shelter and other needs. Habitat is the dwelling place of the animal or a plant. Several kinds of plants and animals may share the same habitat.
:
A
The environment in which an organism lives is called its habitat. The organisms depend on their habitat for their food, water, air, shelter and other needs. Habitat is the dwelling place of the animal or a plant. Several kinds of plants and animals may share the same habitat.
Answer: Option C. -> Transpiration
:
C
∙ Transpiration is the process by which plants lose water in the form of water vapour through pores called stomata on their leaves.
∙ Cellular respiration occurs in all living organisms to obtain energy.
∙ Excretion is the process by which waste products are removed out from the organisms.
∙ Digestion of food is a process that takes place in higher organisms like insects, birds and mammals.
:
C
∙ Transpiration is the process by which plants lose water in the form of water vapour through pores called stomata on their leaves.
∙ Cellular respiration occurs in all living organisms to obtain energy.
∙ Excretion is the process by which waste products are removed out from the organisms.
∙ Digestion of food is a process that takes place in higher organisms like insects, birds and mammals.
Answer: Option B. -> Lizard
:
B
Blue whales, ratsand human beings are mammals. All mammalsgive birth to young ones, except platypus and echidna asthey are egg-laying mammals. Lizards, on the other hand, are oviparous i.e., they lay eggs andthey don't give birth to young ones.
:
B
Blue whales, ratsand human beings are mammals. All mammalsgive birth to young ones, except platypus and echidna asthey are egg-laying mammals. Lizards, on the other hand, are oviparous i.e., they lay eggs andthey don't give birth to young ones.
Answer: Option D. -> Pond
:
D
∙Aquatic habitat is an ecosystem present in a body of water.Ponds, oceans, seas and rivers are examples of aquatic habitats.
∙Terrestrial habitatsare ones that are found on land, such as forests, grasslands and deserts.
:
D
∙Aquatic habitat is an ecosystem present in a body of water.Ponds, oceans, seas and rivers are examples of aquatic habitats.
∙Terrestrial habitatsare ones that are found on land, such as forests, grasslands and deserts.
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