Question 3 :
What are the factors that help in the formation of soil?
Question 4 :
What are the factors that decide which plants will thrive on a soil?
Question 5 :
Interactions between biotic and abiotic components consist of a transfer of matter and energy between the different components
of the biosphere. True or False?
Question 7 :
The process in which water evaporates and falls on the land as rain and later flows back into the sea via rivers is known as the _______.
Question 8 :
During lightning, the high temperatures and pressures created in the air convert nitrogen into oxides of nitrogen.TRUE OR FALSE?
Question 9 :
Plants generally take up nitrates and nitrites and convert them into amino acids which are used to make proteins.TRUE OR FALSE?
Question 10 :
Once the animal or the plant dies, other bacteria in the soil convert the various compounds of nitrogen back into nitrates and nitrites.TRUE OR FALSE?
Question 15 :
An increase in the carbon dioxide content in the atmosphere would cause more heat to be retained by the atmosphere and lead to global warming.TRUE OR FALSE?
Question 17 :
The endoskeletons and exoskeletons of various animals are formed from carbonate salts.TRUE OR FALSE?
Question 18 :
Carbon is incorporated into life-forms through the basic process of photosynthesis which is performed in the presence of Sunlight by all life-forms that contain chlorophyll.TRUE OR FALSE?
Question 19 :
Carbon occurs in the combined state as _______ in the atmosphere.
Question 24 :
The process of nitrogen-fixing by bacteria does not take place in the presence of oxygen.
TRUE OR FALSE?
Question 25 :
In combined form, oxygen occurs as ____ in the Earth's crust and also in the air.
Question 26 :
In the crust,oxygen is found as the oxides of most metals and silicon, and also as carbonate, sulphate, nitrate and other minerals.TRUE OR FALSE?
Question 27 :
Oxygen is found in the elemental form in the atmosphere to the extent of 21%. TRUE OR FALSE?
Question 30 :
CFCs (carbon compounds having both fluorine and chlorine which are very stable and not degraded by any biological process) were found to persist in the atmosphere and deplete the ozone layer.TRUE OR FALSE?
Question 32 :
Ozone absorbs harmful radiations from the Sun and prevents those harmful radiations from reaching the surface of the Earth where they may damage many forms of life.TRUE OR FALSE?
Question 35 :
The air that covers the whole of the Earth like a blanket, is called?
Question 36 :
The life-supporting zone of the Earth where the atmosphere, the hydrosphere and the lithosphere interact and make life possible, is known as?
Question 38 :
What among the following can be a major source of fresh water in a city/town/village ?
Question 43 :
We need not to conserve our natural resources and use them in a sustainable manner. True or False?
Question 44 :
_______ of water from water-bodies and subsequent condensation give us rain.
Question 45 :
State true or false. The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat.
Question 48 :
Which of the following are biologically important compounds that contain both oxygen and nitrogen?
Question 50 :
Why do not lichens occur in Delhi whereas they commonly grow in Manali or Darjeeling?
Question 52 :
In order to make relevant groups to study the variety of life forms, we need to decide which ..... decide more fundamental differences among organisms.
Question 53 :
Which of the following are the examples of variations that you see in life forms around you ?
Question 54 :
How would you choose between two characteristics to be used for developing a hierarchy in classification?
Question 56 :
We have heard of ‘desi’ cows and Jersey cows. Will we be able to identify a Jersey cow in a crowd of desi cows that don’t look like each other?
Question 57 :
In the hierarchy of classification, which grouping will have the smallest number of organisms with maximum common characteristics in common and which will have the largest number of organisms ?
Question 59 :
The organisms that have acquired more complex structures and body designs are called ______.
Question 62 :
Soak seeds of green gram, wheat, maize, peas and tamarind. Once they become tender, try to split the seed. The seeds that do are the dicot seeds and the seeds that don’t are the monocot seeds. Now take a look at the roots, leaves and flowers of these plants. Do the leaves have parallel or reticulate venation?
Question 65 :
In which of the following phloem does not contain companion cells?
Question 66 :
Classification helps us in exploring the diversity of life forms. TRUE or FALSE?
Question 68 :
Fungi have cell walls made of a tough complex sugar called ___________.
Question 73 :
Which of the following animals have their body covered with feathers ?
Question 75 :
In the hierarchy of classification, which grouping will have the largest number of organisms with maximum common characteristics?
Question 76 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2b8f59b460d7261f614.PNG' />
In the above figure, which organism is shown?
Question 79 :
These are animals living in water. They show more body design differentiation. There is a cavity in the body. Identify the group.
Question 80 :
Which of the following have naked embryos called spores while phanerogams produce seeds having embryo and stored food ?
Question 81 :
In the hierarchy of classification, which grouping will have the smallest number of organisms with maximum common characteristics?
Question 82 :
Monera do not have a defined nucleus or organelles. TRUE or FALSE?
Question 83 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2baf59b460d7261f617.PNG' />
In the above figure, what does it show?
Question 84 :
The binomial nomenclature makes for a uniform way of identification of the vast diversity of life around us.
TRUE or FALSE?
Question 86 :
Which of the following are the advantages of classifying organsims ?
Question 87 :
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
Question 88 :
Do scientific names have anything in common with the names you normally use to identify them?
Question 90 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2b9f59b460d7261f615.PNG' />
In the above figure, which organism is shown?
Question 91 :
In which group of Plantae Kingdom, the plant body is differentiated into roots, stem and leaves and has specialised tissue for the conduction of water and other substances from one part of the plant body to another?
Question 92 :
The binomial nomenclature is made up of two words - a generic name and a specific name. TRUE or FALSE?
Question 94 :
Plant can make their own food by the process of ______.
Question 98 :
These animals differ from the fish in the lack of scales, in having mucus glands in the skin, and a three-chambered heart. Respiration is through either gills or lungs. They lay eggs. These animals are found both in water and on land. Identify the group.
Question 100 :
What is the primary characteristic on which the broad division of organisms is made?
