Boojho wanted to test the presence of starch in leaves. He performed the following steps.
He placed the leaf in a petri dish and poured some iodine over it.
He did not get the expected result. Which step did he miss? Explain.

Boojho wanted to test the presence of starch in leaves. He performed the following steps. He took a leaf and boiled it in water. He did not get the expected result. Which step did he miss? Explain.

The steps taken for setting up an experiment to demonstrate that 'light is necessary for photosynthesis', were as follows: * A strip of black paper was clipped on the leaf of a potted plant * The plant was kept in the sun for four hours * The strip was removed and the leaf was placed in boiling alcohol in a water bath * The leaf was washed and tested for starch The result was not as expected. Identify the step which had been missed out:

Read the following passage carefully and answer the question given below. A greedy mouse saw a basket full of corn. He wanted to eat if. So, he made a small hole in the basket. He sqeezed in through the hole. He ate a lot of corn. He felt full and was very happy. Now he wanted to come out. He tried to come out through the small hole. He could not. His belly was full. He tried again. But it was of no use. The mouse started crying. A rabbit was passing by. It heard the mouse's cry and asked," Why are you crying, my friend?" The mouse explained," I made a small hole and came into the basket to eat the corn. Now I am not able to get out through that hole." The rabbit said," It is because you ate too much. Wait till your belly shrinks." The rabbit laughed and went away. The mouse fell asleep in the basket. The next morning his belly had shrunk. But he wanted to eat some more corn. He forgot all about getting out of the basket. So, he ate the corn and his belly was really bit again. After eating, the mouse remembered that he had to escape. But obviously, he could not. So, he thought, "Oh! Now I will go out tomorrorw." The cat was the next passer-by . He smelt the mouse in the basket. He lifted its lid and ate the mouse. How did the mouse come out of the basket?

Read the following passage carefully and answer the question given below. A greedy mouse saw a basket full of corn. He wanted to eat if. So, he made a small hole in the basket. He sqeezed in through the hole. He ate a lot of corn. He felt full and was very happy. Now he wanted to come out. He tried to come out through the small hole. He could not. His belly was full. He tried again. But it was of no use. The mouse started crying. A rabbit was passing by. It heard the mouse's cry and asked," Why are you crying, my friend?" The mouse explained," I made a small hole and came into the basket to eat the corn. Now I am not able to get out through that hole." The rabbit said," It is because you ate too much. Wait till your belly shrinks." The rabbit laughed and went away. The mouse fell asleep in the basket. The next morning his belly had shrunk. But he wanted to eat some more corn. He forgot all about getting out of the basket. So, he ate the corn and his belly was really bit again. After eating, the mouse remembered that he had to escape. But obviously, he could not. So, he thought, "Oh! Now I will go out tomorrorw." The cat was the next passer-by . He smelt the mouse in the basket. He lifted its lid and ate the mouse. How did the rabbit come to know that there is mouse in the basket?