Leaf
Leaf: Overview
Leaves of all plants are not same. This topic discusses the various parts of plants. We will learn that green leaves prepares their own food by the process of photosynthesis.
Important Questions on Leaf
Choose the system of the plant that prepares food?

Look at the picture below.
Leaves of which of these plant(s) has/have parallel venation?

Look at the picture below.
Leaves of which of these plant(s) has/have reticulate venation?

Which of the following is/are the primary functions of leaves?

A carnivorous pitcher plant is shown in the image. Although it consumes insects as food, still the leaves of the plant carry out photosynthesis. What can be a possible reason for such a phenomenon?

If a healthy potted plant is kept inside a dark room for more than a day. What will happen to the plant in dark?

In which of the following conditions the rate of photosynthesis will be higher?

In which of the following conditions, the candle(s) in the bell jar will continue to burn for a longer period of time

Sam conducted a small activity. He put a glass bell jar on a burning candle. The candle went out within a few minutes. Suggest a method to Sam so that the candle keeps on burning although it is kept covered with the glass bell jar.

The three plants A, B and C are kept in different set of conditions as mentioned above. In which of the following plants, proper emission of oxygen will take place?

The image shows a sequence of steps for a particular experiment using a potted and a well watered plant. What conclusion can be drawn from the above experiment?

Plants breathe in oxygen just like other living organisms. Which organ helps the plant to breathe?

The image shows a water lily plant. Which part of the plant makes food for it?

Water is an important ingredient for photosynthesis. Which organ transports water to different parts of the leaf?

State true or false.
Since the shape of leaves differ in various plants, the process of photosynthesis also differs in every plant.

The above experimental set up has a small hydrilla plant inside the pond water. Hydrilla can perform photosynthetic activity inside water. Identify the gas which will be collected on the top of the inverted test tube, while performing the experiment.

State if true or false.
The process of respiration happens during the day in the presence of sunlight.

Photosynthesis can happen only in the presence of sunlight.

The leaves of coleus plants have a deep violet colour. Do they perform photosynthesis?

Which of the following part of the plant is known as the “kitchen of the plant“?
