If you are looking for Class 5 Plants Our Green Friends then you are at the right place.
Fill in the blanks
- Plants are __________, which means they can make their own food. Answer: autotrophic
- The underground part of the plant’s body that grows towards the force of gravity is called the __________.Answer: root
- A __________ root system consists of one main root growing downwards from which lateral roots develop.Answer: tap
- __________ roots remain aerial and do not enter the soil. Answer: Aerial
- The __________ is the aerial part of the plant body and enables a plant to grow taller to gain access to energy-giving light.Answer: shoot system
- In various climbing plants, some parts of stems are modified into coil-like structures called __________.Answer: tendrils
- Leaves are called the __________ factories of green plants.Answer: food making
- The flat surface of the leaf is called the leaf blade or __________.Answer: lamina
- Tiny openings on the surface of the leaves called __________ help in the exchange of gases.Answer: stomata
- __________ is the process by which pollen is transferred from the anther to the stigma of the plant. Answer: Pollination
- The __________ is the waxy, sticky bulb in the center of flowers and is the part which receives pollen. Answer: stigma
- The __________ is a fleshy or dry ripened ovary of a plant, enclosing the seed or seeds. Answer: fruit
- Some plants distribute their seeds by ejecting them with force when they are dried in the sun, a process called __________ dispersal. Answer: explosive
- __________ propagation is a process by which new organisms arise without production of seeds or spores. Answer: Vegetative
Answer the following questions :-
Q: What are the basic parts of a plant?
A: The basic parts of a plant are roots, stems, leaves, flowers, fruits, and seeds.
Q: What is the function of the root system in plants?
A: The root system fixes the plant within the soil, absorbs water and mineral nutrients from the soil, and stores excess food.
Q: What are two main types of root systems?
A: The two main types of root systems are tap roots and fibrous roots.
Q: What is photosynthesis and where does it occur in plants?
A: Photosynthesis is the process by which plants make their own food. It occurs in the leaves, which are often called the food-making factories of green plants.
Q: What are stomata and what is their function?
A: Stomata are tiny openings on the surface of leaves that help in the exchange of gases.
Q: What are the main parts of a flower?
A: The main parts of a flower are petals, sepals, pistils (consisting of stigma, style, and ovary), and stamens (consisting of anthers and filament).
Q: What is pollination?
A: Pollination is the process by which pollen is transferred from the anther to the stigma of a plant.
Q: Name three methods of seed dispersal.
A: Three methods of seed dispersal are by wind, by water, and by animals and humans.
Q: What is vegetative propagation?
A: Vegetative propagation is a process by which new organisms arise without the production of seeds or spores, using parts of the parent plant to grow new plants.
Q: Give an example of a plant that can reproduce through its leaves.
A: Bryophyllum is an example of a plant that can reproduce through its leaves, as buds develop on its leaf margins that can grow into new plants.
Q: What is botany?
A: Botany is the scientific study of plants.
Q: What are modified roots, and can you give an example?
A: Modified roots are roots that perform special tasks. An example is aerial roots, like those found in old banyan trees, which provide support to the tree.
Q: What is the function of the stem in plants?
A: The stem supports the upper parts of plants, carries water and nutrients from roots to leaves, and transports food produced by the leaves to other parts of the plant.
Q: What are tendrils and what is their purpose?
A: Tendrils are coil-like structures modified from stems or leaves. They help weak plants climb up and grow by taking support from other structures.
Q: What is chlorophyll and why is it important?
A: Chlorophyll is a green pigment present in leaves. It’s important because it uses the energy in sunlight to turn water and carbon dioxide into sugar and oxygen during photosynthesis.
Q: How do desert plants like cacti adapt to their environment?
A: Desert plants like cacti often have modified leaves in the form of spines to reduce water loss, and some have water-storing stems.
Q: What is the difference between sepals and petals?
A: Sepals are usually small and green, composing the outermost part of a flower and protecting the bud. Petals are often brightly colored or unusually shaped to attract pollinators.
Q: What is the ovary in a flower, and what does it become?
A: The ovary is part of the pistil located at the bottom of the style. After pollination, it usually becomes the fruit.
Q: How do seeds of plants like dandelions disperse?
A: Dandelion seeds develop very light and fluffy parachute-like structures that help them float in the wind and disperse over long distances.
Q: What is explosive dispersal in plants?
A: Explosive dispersal is a method where plants distribute their seeds by ejecting them with force when dried in the sun. Plants in the Pea Family are an example of this.
