Class 5 Exam  >  Class 5 Notes  >  Science Class 5  >  Worksheet: Plant Life - 2

Plant Life - 2 Class 4 Worksheet Science

Q1: Fill in the Blanks.

(i) Plants produce their food through the process of ____________.

(ii) The green pigment responsible for photosynthesis is called ____________.
Plant Life - 2 Class 4 Worksheet Science

(iii) The process of pollination takes place with the help of ____________.

(iv) The swollen base of the pistil is called ____________.
Plant Life - 2 Class 4 Worksheet Science

(v) The process of water movement through a plant is called ____________.

Q2: Match the Column.

Match the following plant parts with their respective functions:

Plant Life - 2 Class 4 Worksheet Science

Q3: True or False.

(i) True/False: All plants need sunlight for photosynthesis.
Plant Life - 2 Class 4 Worksheet Science

(ii) True/False: The process of pollination occurs after fertilization.

(iii) True/False: Roots are responsible for absorbing carbon dioxide from the atmosphere.
Plant Life - 2 Class 4 Worksheet Science

(iv) True/False: A plant cell has a rigid cell wall, while an animal cell does not.

(v) True/False: Insects play a significant role in the process of pollination.

Q4: Multiple Choice Questions.

(i) What is the primary function of a flower in a plant?
(a)
To conduct photosynthesis
(b) To anchor the plant to the ground
(c) To absorb water and nutrients
(d) To facilitate reproduction
Plant Life - 2 Class 4 Worksheet Science

(ii) Which of the following plant parts is responsible for carrying water and nutrients between the roots and leaves?
(a)
Flowers
(b) Stem
(c) Leaves
(d) Roots

(iii) Which part of the plant holds the pollen grains?
(a)
Stigma
(b) Ovary
(c) Petal
(d) Anther
Plant Life - 2 Class 4 Worksheet Science

(iv) Photosynthesis mainly occurs in the cells of:
(a)
Roots
(b) Stems
(c) Leaves
(d) Flowers

(v) What is the function of the stomata in leaves?
(a) Absorbing sunlight
(b) Transporting water
(c) Exchanging gases
(d) Providing support

Q5: Arrange in Correct Order.

Arrange the following steps in the correct order for the process of pollination:
(a) Fertilization takes place.
(b) Pollen is transferred to the stigma.
(c) Insects carry pollen from one flower to another.
(d) Pollen tube reaches the ovary.
(e) Pollen grains are produced in the anther.

Q6: Short Questions.

(i) Explain the process of photosynthesis in plants.

(ii) Describe the various ways by which seeds can be dispersed.

(iii) Differentiate between taproots and fibrous roots.
Plant Life - 2 Class 4 Worksheet Science

(iv) How does a plant respond to the stimulus of light? Give an example.

(v) What is germination? Describe the conditions necessary for seed germination.
Plant Life - 2 Class 4 Worksheet Science

The document Plant Life - 2 Class 4 Worksheet Science is a part of the Class 5 Course Science Class 5.
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FAQs on Plant Life - 2 Class 4 Worksheet Science

1. What are the different parts of a plant?
Ans. A plant consists of various parts such as roots, stems, leaves, flowers, and fruits. Each part of a plant plays a specific role in its growth and survival. Roots anchor the plant in the ground and absorb water and nutrients from the soil. Stems provide support and transport water and nutrients throughout the plant. Leaves are responsible for photosynthesis, a process that converts sunlight into food for the plant. Flowers are the reproductive structures of a plant, attracting pollinators and producing seeds. Fruits develop from flowers and contain seeds, helping in the dispersal of offspring.
2. How does photosynthesis occur in plants?
Ans. Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose (a type of sugar) and oxygen. This process occurs in the chloroplasts, specialized organelles found in plant cells. Chlorophyll, a pigment present in chloroplasts, captures sunlight energy. Water is absorbed by the roots and transported to the leaves through the stems. Carbon dioxide is obtained from the air through tiny openings called stomata on the leaves. During photosynthesis, sunlight energy is used to split water molecules, releasing oxygen as a byproduct. The remaining hydrogen from the water combines with carbon dioxide to produce glucose, which is used for energy and growth in the plant.
3. How do plants reproduce?
Ans. Plants can reproduce in two main ways: sexual reproduction and asexual reproduction. Sexual reproduction involves the fusion of male and female reproductive cells (pollen and ovules) to form seeds. This can occur through the transfer of pollen from the male reproductive structure (stamen) to the female reproductive structure (pistil) within the same flower (self-pollination) or between different flowers of the same plant or different plants (cross-pollination). Asexual reproduction, on the other hand, does not involve the fusion of reproductive cells and can occur through various methods such as vegetative propagation, fragmentation, and budding. In vegetative propagation, a new plant is formed from a part of the parent plant, such as a stem or leaf. In fragmentation, a new plant is formed from a broken piece of the parent plant. Budding involves the formation of a small bud or outgrowth on the parent plant, which eventually develops into a new individual.
4. How do plants obtain nutrients from the soil?
Ans. Plants obtain nutrients from the soil through their root systems. The roots of a plant have tiny, hair-like structures called root hairs, which greatly increase the surface area for nutrient absorption. The roots absorb water and dissolved minerals from the soil through a process called osmosis. The concentration of nutrients in the soil is higher than in the plant's root cells, so the nutrients move into the roots against the concentration gradient. This movement is facilitated by active transport, where energy is expended to transport the nutrients across the root cell membranes. Once inside the roots, the nutrients are transported upwards through the stem to other parts of the plant, where they are used for various metabolic processes and growth.
5. Why are bees important for plant life?
Ans. Bees play a crucial role in pollination, which is the transfer of pollen from the male reproductive structure (stamen) to the female reproductive structure (pistil) of a flower. When bees visit flowers to collect nectar and pollen, they inadvertently brush against the flower's reproductive parts, picking up pollen grains. As the bees move from flower to flower, they transfer this pollen to the pistils, enabling fertilization and the formation of seeds. This process is essential for the reproduction and genetic diversity of many plant species. Without bees and other pollinators, a significant number of plants would not be able to reproduce, leading to a decline in plant populations and a disruption of ecosystems. Additionally, bees also rely on flowers for food, as nectar and pollen are their primary sources of nutrition.
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