Question

21. Part of the plant that take part in sexual reproduction is *
1 अंक
A) seed
B) fruit
C) flower
D) branch
22. Vegetative propagation in sweet potato takes place by *
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A) root
B) leaves
C) seed
D) stem
23. The 'eye' of the potato plant is what *
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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
24. Vegetative propagation is a type of *
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A) asexual reproduction
B) sexual reproduction
C) binary fission
D) none of these
25. The ovaries of different flowers may contain *
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A) only one ovule
B) many ovules
C) one to many ovules
D) only two ovules
26. Yeasts reproduce by *
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A) fragmentation
B) budding
C) vegetative propagation
D) layering
27. In fungus, reproduction takes place by *
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A) budding
B) spore formation
C) fragmentation
D) binary fission
28. Spirogyra reproduces asexually by *
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A) spore formation
B) fragmentation
C) budding
D) cutting
29. The zygote develops into *
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A) a seed
B) an ovule
C) a fruit
D) an embryo
30. Which of the following plant bear bisexual flower? *
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A) corn
B) papaya
C) cucumber
D) mustard
31. The formula for diistance is *
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A) distance= time/speed
B) distance= speed/time
C) distance= 1/speed x time
D) distance= speed x time
32. The distance travelled by the vehicles is recorded by *
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A) monometer
B) odometer
C) speedometer
D) motometer
33. A bus travels 54 km in 90 minutes.The speed of the bus is *
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A) 0.6 m/s
B) 10 m/s
C) 5.4 m/s
D) 3.6 m/s
34. The clocks and watches which are used for measuring time are based on *
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A) rectilinear motion
B) circular motion
C) periodic motion
D) rotational motion
35. The divice which is used for measuring time intervals in sports activities is called *
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A) wrist watch
B) stop watch
C) stop clock
D) quartz watch
36. If the speed of an object along a straight line keeps changing , its motion is said to be *
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A) uniform motion
B) non- uniform motion
C) linear motion
D) none of these

यह ज़रूरी सवाल है
37. The most well known periodic motion is that of *
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A) sundial
B) stop watch
C) simple pendulum
D) sand clock
38. Which of the following is based on the study of the shadow cast by the sun? *
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A) simple pendulum
B) atomic clock
C) sun dial
D) quartz clock
39. The most appropriate unit for expressing the speed of a space rocket is *
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A) m/s
B) km/s
C) km/h
D) km/min
40. Swami walks to his school which is at a distance of 4 km from his home in 30 minutes. on reaching he finds that the school is closed and comes back in his friends vechile to home in 10 minutes . His average speed in km/h is *
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A) 8 km/h
B) 24 km/h
C) 16 km/h
D) 20 km/h​

Answer 1

Answer:

21. Flower

22. root

23. the bud is to a flower

24. asexual reproduction

25. only one ovules

26. fragmentation

27. spore formation

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