CBSE Class 6 Science Getting to know Plants Assignment Set 01

Class-VI
L-7 Getting to know Plants
Part I - Assignment - I

Question 1. Enlist the function of roots?
Answer: The primary functions of roots are:
1. Absorption: Roots absorb water and essential minerals from the soil, which are necessary for the plant's growth and survival.
2. Anchorage: They anchor the plant firmly in the soil, providing structural support so it stands upright.
3. Storage: In some plants (like carrots and radishes), roots store food reserves.
4. Prevention of soil erosion: Roots hold the soil particles together, preventing them from being washed away easily.
In simple words: Roots absorb water and minerals, hold the plant securely in the ground, and sometimes store food.

Exam Tip: Always remember the two main roles of roots: absorption of water/minerals and providing firm anchorage to the plant.

Question 2. Enlist the function of stem?
Answer: The primary functions of the stem are:
1. Conduction: The stem transports water and minerals absorbed by the roots to the leaves and other plant parts, and carries prepared food from leaves down to the roots and storage organs.
2. Support: It holds branches, leaves, flowers, and fruits in an upright position, exposing leaves to sunlight for photosynthesis.
3. Storage: Certain stems store food and water (e.g., potato, sugarcane).
4. Reproduction: In some plants, stems help in vegetative propagation.
In simple words: The stem acts like a highway for water and food transport, and holds the plant upright to catch sunlight.

Exam Tip: Mention both transport (conduction) and mechanical support to score full marks.

Question 3. Enlist the function of Leaf?
Answer: The primary functions of a leaf are:
1. Photosynthesis: Leaves prepare food for the plant using sunlight, water, carbon dioxide, and chlorophyll.
2. Transpiration: They release excess water vapor into the atmosphere through tiny pores called stomata, which helps in cooling the plant and creating an upward suction pull for water.
3. Gas Exchange: Leaves take in carbon dioxide and release oxygen during photosynthesis and respiration.
In simple words: Leaves make food for the plant using sunlight and release water vapor and oxygen.

Exam Tip: Highlight keywords like photosynthesis, transpiration, and stomata for complete credit.

Question 4. Give 2 examples of each __
a. Herbs: Tomato plant, Coriander
b. Shrubs: Rose, Lemon
c. Trees: Mango tree, Neem tree
Answer:
a. Herbs: Tomato, Mustard
b. Shrubs: Rose, Jasmine
c. Trees: Mango, Banyan
In simple words: Herbs are very small tender plants, shrubs are bushy medium-sized plants with hard stems, and trees are tall woody plants with trunks.

Exam Tip: Be sure to provide distinct, common examples that clearly fit each plant category.

Question 5. What are the main difference between a taproot and fibrous root?
Answer:
Taproot:
1. It consists of one main prominent single root (primary root) growing straight down from which smaller lateral roots arise.
2. It goes deep into the soil.
3. Found in plants with reticulate venation in their leaves (e.g., Mango, Carrot, Pea).

Fibrous root:
1. It has no main primary root; instead, a bunch of thin, fiber-like roots arise together from the base of the stem.
2. They do not go very deep into the soil and spread out horizontally.
3. Found in plants with parallel venation in their leaves (e.g., Grass, Wheat, Maize).
In simple words: A taproot has one big central root going deep down, while fibrous roots are a cluster of many small, thin roots spreading near the surface.

Exam Tip: Always correlate root types with leaf venation (Taproot - Reticulate venation; Fibrous root - Parallel venation) as this is a frequently tested concept.

Question 6. Fillup the following by using keywords given ____
Keywords given: Pistil, stem, root, anther, petal, filament.
i) The underground part of the plant is called root.
ii) The female reproductive part of the plant is pistil.
iii) The part of plant that conduct water and mineral is called stem.
iv) Anther and filament are parts of stamen.
v) Petal is the most attractive part of the flower.
Answer:
i) root
ii) pistil
iii) stem
iv) Anther, filament
v) Petal
In simple words: Match the correct botanical term to each description provided in the sentences.

Exam Tip: Memorize the parts of a flower and plant organs to quickly fill in blanks accurately.

Question 7. Draw and paste pasts of flower in given boxes_____
Answer:
To complete this activity, collect fallen floral parts (sepals, petals, stamens, and pistil), press them gently between sheets of paper to dry, and paste them into the designated boxes alongside neat pencil sketches.
In simple words: Draw and stick real parts of a flower like petals and stamens in the boxes.

Exam Tip: Label all floral parts clearly with pointer lines when sketching.

Question 8. Mention types of venation in leaf and label it _____
A. Reticulate venation
B. Parallel venation
Answer:
A. Reticulate venation (Net-like design formed by veins on both sides of the midrib, e.g., Hibiscus, Mango leaf)
B. Parallel venation (Veins run parallel to each other from base to tip, e.g., Grass, Banana leaf)
In simple words: Leaf venation is of two main types: network-like (reticulate) and line-by-line (parallel).

Exam Tip: Draw clear diagrams showing the net-like mesh for reticulate and straight lines for parallel venation.

Question 9. Draw and name some plants where roots are modified for storage of food?
i) Carrot
ii) Radish
iii) Beetroot
Answer:
i) Carrot (Daucus carota) - Conical root modification.
ii) Radish (Raphanus sativus) - Fusiform root modification.
iii) Beetroot (Beta vulgaris) - Napiform root modification.
In simple words: Draw sketches of root vegetables like carrot, radish, and beetroot which store food underground.

Exam Tip: Keep your diagrams simple and neat, labeling the swollen root portion clearly.