Class 6 Curiosity
Q1: Here are two types of seeds. What differences do you find among the roots and leaf venation? ‘
(a) Wheat (b) Kidney beans
Answer: Wheat is a monocot and kidney beans are dicot plants.
| Feature | Wheat | Kidney Beans |
| Roots | Fibrous root | Taproot |
| Root Characteristics | Dense network of thin roots | Central thick root with smaller lateral roots |
| Leaf Venation | Parallel venation | Reticulate venation |
| Leaf Characteristics | Veins run parallel along the length of the leaf | Network of veins on both sides of a thick middle vein |
Q2: Examine a radish and write what type of root it is. What type of venation would you observe in the leaves of a radish plant?
Answer:
- Type of radish root: Taproot.
- Leaf venation: Reticulate venation.
Q3: Look at the image of a mountain goat and a goat found in the plains. Point out the similarities and differences between them.
Answer:
Similarities:
- Both are herbivorous animals, feeding on grass and plants.
- Both have four legs, a pair of horns, and hooves.
Differences:
| Feature | Mountain Goat | Plains Goat | Reason for Differences |
| Fur | They have thick and long fur to survive in cold, snowy conditions. | They have thinner and shorter fur suitable for warm regions. | These differences are for adaptation to their habitats. Mountain goats need thick fur for warmth. |
| Hooves | They have special hooves for climbing mountains. | They have flat hooves suitable for plain areas. | |
| Legs | They have shorter legs. | They have longer legs. | Mountain goats need shorter legs for better balance on mountains. Plains goats have long legs for running in plain areas. |
Q4: As the population grows and people want more comfortable lives, forests are being cut down to meet various needs. How can we address this challenge? What are the effects of deforestation on our surroundings?
Answer:
Effects of Deforestation:
- It destroys the natural habitat of plants and animals, leading to their extinction.
- It makes the soil loose, less fertile, and not so suitable for agriculture.
- It can lead to irregular rainfall.
- It decreases air quality.
Ways to Address the Challenge:
- Plant more trees.
- National parks and wildlife reserves should be protected by the government for wildlife protection.
- Strict laws to protect forests from illegal logging.
Q5: Analyze the flowchart. What can be examples of ‘A’ and ‘B’?
Answer:
- A: A plant with reticulate venation (e.g., mango, rose, and any other dicot plant).
- B: A plant with parallel venation (e.g., grass, wheat, and any other monocot plant).
Q6: What is the difference between a taproot and a fibrous root?
Answer:
| Taproot | Fibrous Root |
| It has one main root and many smaller roots growing from the main root. | It does not have any main root. All roots are similar. |
| It goes deep into the soil. | It does not go deep into the soil. |
| Taproots are found in plants which have reticulate venation in their leaves. | Fibrous roots are found in plants which have parallel venation in their leaves. |
Q7: How are camels living in a hot desert different from camels living in a cold desert?
Answer:
| Camels in a Hot Desert | Camels in a Cold Desert |
| They have long legs with wide hooves. | They have shorter legs. |
| They have one hump. | They have two humps. |
| They do not have long hair. | They have long hair to protect them from the cold winter. |
Q8: What do you mean by leaf venation? Explain various types of leaf venation with examples. Answer: The design made by veins on a leaf is called leaf venation. There are two types of leaf venation:
- Reticulate venation: If the veins make a net-like structure on both sides of the midrib, then it is called reticulate venation. Examples: mango leaf, hibiscus leaf, etc.
- Parallel venation: If veins are parallel to each other beside the midrib, then such type of venation is called parallel venation. Examples: wheat leaf, grass leaf, etc.
Q9: What is biodiversity? Answer: Biodiversity refers to the variety of life on Earth, including plants, animals, microorganisms, and the ecosystems they form.
Q10: What is the importance of grouping plants and animals? Answer: Grouping makes it easier to understand and study plants and animals on the basis of their similarities and differences.
Q11: What are fibrous roots? Answer: Fibrous roots are a type of root system where many thin roots spread out from the base of the stem.
Chapter 2: Diversity in living world organisms.
Answer the following questions
1) What do you understand by biodivercity?
Ans-
i) Biodivercity means the variety of diffrent living things of earth
ii) It includes plants, animals and microorganisms.
iii) It includes all the diffrent organisms and the varietys of habitats where they live.
2) Do all plants have roots? are these roots similar?
Ans-
i) Genrally, all plants have roots.
ii) However, these roots are not similar.
iii) Roots are mainly of two types i.e. Tap roots and Fibrous roots.
3) Diffrenciate between tap roots and fibrous roots
Ans-
| Tap roots | Fibrous roots |
| i) Tap roots have one main long root. roots that grow from the main root are called lateral roots | i) Fibrous roots do not have a main root. |
| ii) All roots are more or less similar in size | |
| iii) Tap roots go deep inside the soil | iii) They do not go deep in the soil. |
4) Explain the types of venation with suitable examples.
Ans-
i) Venation is the arangement of veins and veinlets in the leaf.
ii) There are two main type of venation Reticulate venation and Parllel venation
iii) Reticulate venation: In this type of venation veins from a net like pattern on the dicot leaf. it is comonly found in dicot plants.
iv) Parallel venation: In this type veins run parallel to each other from the base to the tip of th leaf. It is commonly found in monocot plants. examples: grass, wheat.
5) Why is the camel called the “ship of the dessert”?
Ans-
i) It has flat, broad feet for walking on sand.
ii) It can travel long distance without water
iii) It carries peoples and heavy loads acros the desserts
iv) It provides transport in areas where vehicles cannot go.
v) It helps people cross the dessert like a ship crosses water.
6) Describe the vegetations of hot desserts.
Ans-
i) Plants are adapted to survive with very little water.
ii) Mostly thorny bushes, shrubs, and cacti are found in hot dessert.
iii) Leaves are reduce to spines to reduce water loss.
iv) Thick fleshy stem stores water ex. cactus.
v) Roots are long or spread widely to absorb water quickly.
7) Diffrenciate between cold dessert and hot dessert camel.
Ans-
| cold desert camel | hot dessert camel |
| 1) lives in cold dessert such as Gobi Desserts | 1) lives in hot desserts such as the sahara deserts |
| 2) Has two hump that stores fat | 2) Has one hump that stores fat |
| 3) Have thick warm fur to keep its body warm | 3) Has short thin hairs help to keep its body cool. |
| 4) Has short strong legs and broad feet for walkin on snowy rocky land | 4) Has long legs and broad feet for walking on hot sand. |
| 5) can survive in very low temprature. | 5) can survive in very high tempratures and with little water. |