Light is a complex physical factor without which no life can sustain on earth. Sun is the ultimate source of light and the other natural Sources are moonlight, starlight, luminescent organisms. Solar light before entering atmosphere constant energy 2 Cal/cm3/min. Called solar constant. The different effects of light are photosynthesis, photomorphogenesis, development, growth, reading activity animal activity, etc. Take this quiz and know more about the light abiotic component of the ecosystem.
1. Light intensity at which photosynthesis is sufficient to requirements of respiration what is called..........
A. Photoperiodism
B. Lapse rate
C. Pigmentation
D. Compensation point
2. Differentiation of various tissues and organs is directly proportional to the sunlight received by the plant is called......
A. Breeding activity
B. Development
C. Photomorphogenesis
D. Photoperiodism
3. Which of the following wing development tampon alternate light and dark exposure?
A. Aphids
B. Elephant
C. Starling
D. Goat
4. The response of a plant to the duration of sunlight in a day is called.....
A. Plant movement
B. Photoperiodism
C. Photomorphogenesis
D. Compensation point
5. Which one of the following is the long day plant?
A. Cotton
B. Tomato
C. Radish
D. Potato
6. Which one of the following is the short-day plant?
A. Dahlia
B. Tobacco
C. Potato
D. Tomato
7. Which of the following is day-neutral plant?
A. Cotton
B. Tobacco
C. Potato
D. All of these
8. Which one of the following is a short day animal?
A. Turkeys
B. Sheep
C. Frog
D. Elephant
9. Those animals which are active in daylight is called...
A. Dirunal
B. Nocturnal
C. Auroral
D. Vesperal
10. Those animals who are active during the night is called.....
A. Vesperal
B. Auroral
C. Nocturnal
D. None of these
11. Which one of the following is the example of vesperal?
A. Butterfly
B. Owl
C. Cockroach
D. Rabbit
12. Planktons are also restricted to........ Metre of water due to the availability of light.
A. 1000
B. 2000
C. 3000
D. 4000
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