External Structures of Plants

What is the main function of the root system in a plant?

• Anchoring the plant in the soil and absorbing water and nutrients

• Storing excess water and nutrients

• Supporting the leaves

• Producing flowers and fruits

Name the two types of roots and explain the difference between them.

• Water roots and nutrient roots

• Taproot and fibrous roots

• Long roots and short roots

• Primary roots and secondary roots

What is the main function of the stem in a plant?

• Supporting the plant and transporting water, nutrients, and sugars

• Producing flowers and fruits

• Converting sunlight into energy

• Anchoring the plant in the soil

Explain the difference between herbaceous and woody stems.

• Herbaceous stems are red, while woody stems are green.

• Herbaceous stems grow in cold climates, while woody stems grow in warm climates.

• Herbaceous stems are used for making furniture, while woody stems are used for cooking.

• Herbaceous stems are soft and flexible, while woody stems are hard and rigid.

What is the main function of the leaves in a plant?

• Water storage

• Photosynthesis

• Support for the plant

• Reproduction

Describe the structure of a leaf and its function in photosynthesis.

• The structure of a leaf includes the stem, roots, and flowers. The function of a leaf in photosynthesis is to absorb water, release oxygen, and store nutrients.

• The structure of a leaf includes the petals, stamen, and pistil. The function of a leaf in photosynthesis is to provide support, transport nutrients, and protect the plant.

• The structure of a leaf includes the epidermis, mesophyll, and veins. The function of a leaf in photosynthesis is to absorb light energy, convert it into chemical energy, and produce glucose.

• The structure of a leaf includes the bark, cambium, and pith. The function of a leaf in photosynthesis is to produce seeds, attract pollinators, and store water.

What is the main function of a flower in a plant?

• Providing support for the stem and leaves

• Attracting insects for pollination

• Storing water and nutrients

• Reproduction through the production of seeds

Name the different parts of a flower and their functions.

• Roots, leaves, stem, branches, chlorophyll

• Thorns, tendrils, bracts, scales, spines

• Anther, filament, style, stigma, sepal

• Petals, sepals, stamen, pistil, ovary

Explain the process of pollination and its importance in plant reproduction.

• Pollination is the process of transferring nutrients from the soil to the plant. It is important for plant reproduction as it provides essential minerals.

• Pollination is the process of transferring water from the roots to the leaves of a plant. It is not important for plant reproduction.

• Pollination is the transfer of seeds from one plant to another. It is important for plant reproduction as it helps in genetic diversity.

• Pollination is the transfer of pollen from the male reproductive organ (anther) to the female reproductive organ (stigma) of a flower. It can occur through wind, water, or by animals such as bees, butterflies, and birds. Pollination is important for plant reproduction as it leads to the formation of seeds and fruits, ensuring the continuation of plant species.

Describe the life cycle of a flowering plant from seed to adult plant.

• Seed germination, growth of leaves, fruit formation, dispersal

• Seed germination, growth of roots and shoots, flowering, pollination, seed formation, and dispersal

• Root growth, flowering, seed dispersal, pollination

• Seed formation, leaf growth, pollination, root development