Our Environment
| Description: Notes and Test Papers for Chapter Our Environment of Class X, Online test Papers with Solution for CCE Class X Science and other Chapters | |
| Number of Questions: 40 | |
| Created by: Manjit Singh | |
| Tags: Our Environment Science Environmental Science CCE Class X CCE Class X Science CCE Class X Environment CCE Class X Evs CCE Sample Papers CCE Class X Sample Papers Ecology and Ecosystem : Functioning and Organisation Flow of Energy Trophic Levels Biological Magnification Autotorphs and Heterotrophs Food Chain, Food Web Ozone Layer Depletion Ecological Pyramids, Pyramid of Number, Number, Biomass, Energy Ten Percent Law |
From the Autotrophs, the energy goes to the _________ and then finally to the__________.
____________ is not an example of an ecosystem.
Which of the following ecosystems is natural?
In which of the following trophic levels can the herbivores be found?
The organisms which consume both plant as well as animal products are known as
What is the accumulation of non-biodegradable substances at each trophic level referred to as?
What do the interacting organisms in an area together with the non-living constituents of the environment form?
Man belongs to the ____________ category of consumers.
The trophic levels represent the
Which of the following is a primary consumer?
The sequence of living organisms in a community in which one organism consumes another with the transfer of food energy is known as
The lowest level of organization is
Which of the following is a phytoplankton?
On which of the following position can a tiger be placed in a food chain?
Which of the following does not belong to higher level of organization?
____________ is the abiotic component of a pond ecosystem.
The ____________ constitute the fourth trophic level.
Which of the following animals can be a tertiary consumer
A group of inbreeding individuals forms a
In which trophic levels are the plants placed in a food chain or an ecological pyramid?
Which of the following is not represented by an ecological pyramid?
The very minute or microscopic organisms freely floating on the surface of water in a pond are known as
Top carnivores feed upon the
What is the position of grass in a food chain?
How many oxygen atoms are present in an ozone molecule?
Which of the following statements is true?
If 15000 cal of solar energy is incident on plants, how many kilocalories of energy will be transferred to the herbivores?
____________ is not the component of an ecosystem.
Which of the following components is not recycled in nature?
Which of the following does not contribute to environmental degradation?
What is the type of energy flow in an ecosystem?
As the trophic level in an ecological pyramid increases, the number of living organisms
What percentage of energy present at one trophic level is passed on to the next trophic level?
What do you infer from the pyramid of energy?
What percentage of the solar energy that falls on the leaves is utilized by the plants for the process of photosynthesis?
____________ is the ultimate source of energy
The ____________ fix up the solar energy and make it available in a food chain.
The ozone protects the earth from the ____________ of the sun.
Which of the following organisms can synthesize their food by the process of photosynthesis?
Which of the following chemicals is linked with the decrease in the amount of ozone in the atmosphere?