Science [1 Marks Each] QUE - ANS

The transfer of pollen from anther to stigma is called pollination.

Ovary.

The green colour of leaves is because of the presence of chlorophyll.

Ovary is found in pistil. Ovules can be seen in innermost part of an ovary.

The plants with weak stem that cannot stand upright and spread on ground are called creepers.

• Jamun (Jamun is a tree while others are herbs).
• Guava (Guava is a tree while others are shrubs).

The process by which leaves make food for plants is called photosynthesis.

Plants with green and tender stems are called herbs.

Plants which are tall and have hard, thick brown stem are called trees. The stem has branches in the upper part, much above the ground.

Carbon dioxide and oxygen are involved in photosynthesis. Carbon dioxide is used whereas oxygen is released in photosynthesis.

The part of leaf which is attached to the stem is called petiole and the broad green part of the leaf is called lamina.

Stem in shrubs is hard but not very thick whereas trees have hard, thick brown stem.

There are some lines on the leaf called veins.

Plants prepare its food by photosynthesis. It takes place in the leaves of plant.

Leaves.

The swollen basal part of the pistil is the ovary which bears the ovules.

Jointed sepal-hibiscus and separated sepal-jasmine.

The part of the plant which generally grows above the ground level and bears leaves, flowers and fruits is called a stem.

Anther and filament.

Plants use carbon dioxide and water for photosynthesis. It takes place in presence of sunlight and chlorophyll.

Lemon.

In a pitcher plant, the lamina is modified into a pitcher and apex into its lid.

The design made by vein in leaf is called leaf venation.

The loss of water in the form of vapour from plant parts is termed as transpiration.

By looking at the venation of the leaves, we can identify the root system of a plants. Plants with leaves having parallel venation have fibrous root and leaves having reticulate venation have taproot.

Weeds are unwanted plants that start growing in a field or plot.

1. Root absorbs water and minerals from the soil.
2. Stem holds the plant upright.
3. Stem conducts water to the leaves.
4. The number of petals and sepals in a flower may be different in different plants.
5. If the sepals of a flower are joined together, then its petals may or may not be joined together.
6. If the petals of a flower are joined together, then the stamen may or may not be joined to the petal.

Water comes out of leaves in the form of vapour. This is called transpiration.

Fertilization takes place in ovary.

Flowers with joined sepals are Periwinkle (Sadabahar) and Hibiscus (China rose). Flowers with separated sepals are Rose and Magnolia.

Plants get water from soil through roots. It is conducted to all plant parts by stem.

Trees have hard and thick brown stem.

Some plants have a main root called tap root and smaller roots called lateral roots. Whereas other plants have fibrous roots.

Wheat.

Herbs, shrubs and trees.

The small green leaves at the base of flowers are known as sepals.

The reproductive parts of a flower are:

• Stamens.
• Pistil.

There is a thick vein in the middle of the leaf called midrib.

Tomato.

Stamen has two parts called anther and filament.

No, it is not a herb because sapling is a stage in growth of the plant. A mango sapling would grow into a tree.

The young unopened flower is termed as bud.

Plants having the reticulate venation have tap roots while plants having the leaves with parallel venation have fibrous roots.

Food is stored leaves and in some plants in roots in the form of starch.

Tap root and fibrous root.

Yes. Stem carries the water absorbed by the roots to the leaves and also the food prepared by the leaves to the roots.

Lamina.

The stem conducts water from roots to the leaves (and other parts of plant) and food from leaves to other plant parts.

A plant bears first flowers, then seeds and in the last fruits.

Ovary is the innermost swollen part of pistil.