Question

CHOOSE THE CORRECT ANSWER :-


1. The transfer of pollen from the anther to stigma is called


(a) Pollination

(b) Fertilization

(c) Adoption

(d) Diffusion


2. The fusion of female reproductive nucleus with the male reproductive nucleus

is known as


(a) Adoption

(b) Excretion

(c) Fertilization

(d) Regeneration

3. In yeasts reproduction occurs by


(a) fragmentation

(b) binary fission

(c) budding

(d) spore formation


4. Seeds of drumstick and maple are carried to long distances by wind because
they possess


(a) winged seeds

(b) large and hairy seeds

(c) long and ridged fruits

(d) spiny seeds


5. The eye of the potato plant is what


(a) the root is to any plant

(b) the bud is to a flower

(c) the bud is to Bryophyllum leaf

(d) the anther is to stamen


6. The ovaries of different flowers may contain


(a) only one ovule

(b) many ovules

(c) one to many ovules

(d) only two ovules


7. Vegetative propagation in potato takes place by


(a) leaves

(b) stem

(c) root

(d) seed


8. Lila observed that a pond with clear water was covered up with a green algae
within a week. By which method of reproduction did the algae spread so
rapidly ?


(a) Budding

(b) Sexual reproduction

(c) Fragmentation

(d) Pollination


9. Male reproductive part of a plant is


(a) pores

(b) pistil

(c) stamen

(d) ovary

10. Mature ovule forms


(a) buds

(b) endosperm

(c) seed

(d) fruit


11. A bus travels 54 km in 90 minutes. The speed of the bus is


(a) 0.6 m/s

(b) 10 m/s

(c) 5.4 m/s

(d) 3.6 m/s


12. Time period of a simple pendulum depends upon its


(a) weight of bob

(b) length

(c) both (a) and (b)

(d) None of these


13. Which of the following cannot be used for measurement of time?


(a) A leaking tap

(b) Simple pendulum

(c) Shadow of an object during the day

(d) Blinking of eyes


14. The correct symbol to represent the speed of an object is:


(a) 5 m/s

(b) 5 mp

(c) 5 m/s-1

(d) 5 s/m


15. The speed of the vehicle is recorded by


(a) Ammeter

(b) Odometer

(c) Speedometer

(d) Voltmeter


16. Time interval of 1000years is called


(a) A millennium

(b) Trillion

(c) Century

(d) Decade

17. Watch used to measure short interval of time is


(a) Stop watch

(b) Pendulum watch

(c) Atom watch

(d) Quartz watch


18. Speed-time graph is straight line for


(a) Non-uniform motion

(b) Discontinuous motion

(c) Uniform motion

(d) Accelerated motion


19. One Kilometer is equal to


(a) 100m

(b) 10m

(c) 10000m

(d) 1000m


20. If the velocity of a body does not change with time, its acceleration is


(a) zero

(b) infinite

(c) Unity

(d) None of these​

Answer 1

Explanation:

this is your answer by ashutosh Tiwari

Answer 2

Answer:

1 answer of first question is pollination

2 answer of second question is fertilization

3 answer of third question is budding

4 answer of 4th question I don't know

5 the answer of the first question the anther is to stamen

6