CHOOSE THE CORRECT ANSWER
1. This plant shows movement upon touching
a) Touch-me notb) sunflowerc) lotus
2. Movement is a feature of
a) Non living thingsb) living thingsc) both living and non living things
3. Plants shed their leaves in
a) Autumnb) summerc) winter
4. Some birds in response to weather conditions
a) Moveb) sleepc) migrate
5. A dog
a) Lays eggsb) gives birth to young onesc) does not reproduce
6. Plants produce from which new plants arise
a) Rootsb) flowersc) seeds
7. Living things are bom, grow up and reproduce. This is called
a) Life cycleb) water cyclec) air cyde
8. Living that are no more alive are called
a) Dead animalsb) decayed animalsc) living animals
9. Living and non living things are affected by
a) Foodb) growthc) weather
10. Man made things are called
a) Natural thingsb) man made thingse) plastic things
Answers
Answer:
ANSWER
Nastic movements occur in response to a stimulus. It is independent of its direction. They are shown by bifacial organs (leaves, sepals, petals) and are in response to a diffused external stimulus.
Seismonastic movements are due to shock or touch stimulus. Such movements are shown by Mimosa pudica. The best example of seismonastic movement is the leaves of sensitive plant Mimosa pudica (Touch me not). It shows both nyctinastic (Sleeping movement) and seismonastic movement (shock movements).
The leaf of Mimosa is compound having four pinnae and each pinna is having many pinnules. If a terminal pinnule is touched, the whole leaf droops down. This is due to the fact that at the bases of the pinnules, pinna and whole leaf, a swollen structure called pulvinus is present and drooping is due to loss of turgidity of the lower portion of pulvinus.
Answer:
1 touch me not
2 living things
3 autumn
4 move
5 give birth to young ones
6 seeds
7 life cycle
8 dead animals
9 weather
10 man made things
Explanation:
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