Which of these processes removes carbon from the atmosphere?
Animal putrefaction
Burning fuels
Photosynthesis
Volcanic eruption
Respiration in plants
Correct answer is C
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil.
Find the median of the following set of numbers: 28, 29, 39, 38, 33, 37, 26, 20, 15, 25
33
29.5
29
28.5
28
Correct answer is D
15, 20, 25, 26, 28, 29, 33, 37, 38, 39
median = \(\frac{28 + 29}{2}\)
= 28.5
250m
353m
354m
433m
500m
Correct answer is E
\(\tan 45 = \frac{x}{500}\)
\(x = 500 \tan 45\)
= \(500 m\)
At the end of photosynthesis, the green leaf is tested for starch and not glucose because
the glucose is used up immediately to provide energy for the needs of the leaf
the glucose formed is immediately converted to starch
starch is stored only in leaves
there are no chemicals for glucose test in leaves
it is easy to test for starch
Correct answer is B
No explanation has been provided for this answer.
Which of the following organisms has a symbiotic relationship with green algae?
Amoeba
Paramecium
Hydra
Euglena
Chlamydomonas
Correct answer is C
No explanation has been provided for this answer.
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