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31
Pencillium does not swallow the growth of bacterium Staphylococcus. This sort of relationship is called
Discuss
Answer & Solution
Answer: Option C
Solution:
Pencillium does not swallow the growth of bacterium Staphylococcus. This sort of relationship is called amensalism.
32
The Salim Ali Bird sanctuary is located at
Discuss
Answer & Solution
Answer: Option B
Solution:
The Thattekkad Bird Sanctuary has a rich and varied birdlife. Several species of birds, both forest birds as well as the water birds, visit the sanctuaries
33
The instrument that measures temperature, pressure, and humidity at various altitudes in the atmosphere:
Discuss
Answer & Solution
Answer: Option B
Solution:
The radiosonde is a balloon-borne instrument platform with radio transmitting capabilities. Originally named a radio-meteorograph, the instrument is now referred to as a radiosonde, a name apparently derived by H. Hergesell from a combination of the words "radio" for the onboard radio transmitter and "sonde", which is messenger from old English.
The radiosonde contains instruments capable of making direct in-situ measurements of air temperature, humidity and pressure with height, typically to altitudes of approximately 30 km. These observed data are transmitted immediately to the ground station by a radio transmitter located within the instrument package.
34
The species that flower are called
Discuss
Answer & Solution
Answer: Option C
Solution:
The angiosperms (also called flowering plants) are a major group of land plants, with 250,000 species having been described. Angiosperms comprise one of the two groups in the seed plants
The flowering plants cover their seeds by including them in a true fruit. They bear the reproductive organs in a structure called a flower; the ovule is enclosed within a carpel (female reproductive organ of a flower), which will lead to a fruit.
35
Basidiospores are considered to be a major source of
Discuss
Answer & Solution
Answer: Option A
Solution:
A basidiospore is a reproductive spore produced by Basidiomycete fungi, a grouping that includes mushrooms, shelf fungi, rusts, and smuts. Basidiospores typically each contain one haploid nucleus that is the product of meiosis, and they are produced by specialized fungal cells called basidia
36
An example of an abiotic component
Discuss
Answer & Solution
Answer: Option B
Solution:
Soil is often considered an abiotic factor since it is mostly made up of small particles of rock (sand and clay) mixed with decomposed plants and animals. Plants use their roots to get water and nutrients from the soil.
37
Pollutants that are introduced into the environment by human activity are called as
Discuss
Answer & Solution
Answer: Option C
Solution:
Anthropogenic pollution is not new—humans have contributed to the environmental burden since they learned to control fire and smelt metals. However, the nature and distribution of contaminants in the environment has changed in recent history as new compounds have been created
38
When clouds are viewed near the horizon, the individual cloud elements usually:
Discuss
Answer & Solution
Answer: Option A
Solution:
When clouds are viewed near the horizon, the individual cloud elements usually appear closer together than is actually the case.
39
Which sea is referred to as an oceanic desert?
Discuss
Answer & Solution
Answer: Option B
Solution:
Because of its stillness and seaweeds on the surface, the Sargasso Sea is a fascinating ECOSYSTEM. Marine biologists have called it a biological desert, largely devoid of plankton, a basic food supply for fish.
40
At night, low clouds:
Discuss
Answer & Solution
Answer: Option A
Solution:
At night the reflection effect is zero so the greenhouse effect and reflection of thermal radiation dominate and the low thick clouds have a warming effect.
The greenhouse effect could at most return 50 percent of the outgoing radiation back to the Earth