Geeta stretched a piece of plastic food wrap over a large bowl and held it firmly in place with a rubber band. She put some green beans on the plastic. Then she used a spoon to hit the side of the bowl. She saw that the beans bounced all over the plastic producing little tapping noises. Which of the following shows the energy conversions that have taken place?
A Movement → Sound → Movement
B Sound → Sound → Movement
C Movement → Sound → Movement → Sound
D Sound → Movement → Sound → Movement
Which of these machines work on the same principle as does the see-saw?
A P and Q
B Q and R
C P and R
D R and S
Some food items are shown in the given box.
There are _______ energy giving foods, ______ body building foods and ______protective foods.
A 5, 4, 3
B 4, 4, 4
C 3, 4, 5
D 5, 2, 5
Mrs. Mehra, who is 32 years old, underwent a surgery
to get her oviducts removed after having girl. Now,
she wants to have another baby. Do you think she
can have another baby?
A Yes, she can have another baby as her ovaries are still functional to produce eggs.
B No, she cannot have another baby because fertilisation of egg takes place in the oviduct.
C Yes, she can have another baby because the surgery can be reversed.
D No, she cannot have another baby as the hormones associated with the oviduct will not be present.
According to me the answer should be A as IVF technique can be still used, but the answer mentioned is B. need help and guidance
The process by which plants add water to the air is called
Rohan's meal contains sufficient amounts of milk, egg, rice, chappati and even fish. But, still he complains of indigestion and constipation. doctor advised him to increase intake of green leafy vegetables like cabbage, spinach, corn, fruits like banana, orange and also drink more water. How would this help him to improve his condition?
ARoughage in fruits and green vegetables would provide him more energy to tolerate problems of indigestion and constipation.
BRoughage present in fruits and green leafy vegetables and water would help him to get rid of undigested food
CGreen leafy vegetables and fruits would make his bones and muscles strong and he would be able to digest food easily.
DDrinking more water will reduce digestion and absorption of food, and thus it will pass out easily as faeces.
The given diagram shows many sperms near an egg. Which of the following statements about reproduction in animals are incorrect?
i Sperms are produced by male animals.
ii Usually, one egg is fertilized by many sperms.
iii After fertilization, the egg will grow and develop into young animal.
iv Fertilization always takes place while the egg is still inside the body of the female animals.
A i only
B ii and iv
C iii and iv
D i, ii and iii
i think the answer of this question is wrong.