Diversity in the Living World
Fill in the Blanks:
1. Plants with reticulate venation generally have __________ roots.
(Answer: taproot)
2. The method of arranging things into groups based on their common features is called __________.
(Answer: grouping)
3. __________ are animals that can live both in water and on land.
(Answer: Amphibians)
4. __________ have one cotyledon, while dicots have __________ cotyledons.
(Answer: Monocots, two)
5. The place where plants and animals live is called their __________.
(Answer: habitat)
6. __________ is a feature of plants and animals that enables them to survive in a particular region.
(Answer: Adaptation)
7. A __________ tree typically has a thick, woody stem and its branches arise higher up from the ground.
(Answer: Mango)
8. Plants like the hibiscus show __________ venation in their leaves.
(Answer: reticulate)
True or False:
1. Monocot plants have taproots. (False)
Reason : Monocot plants have fibrous roots.
2. All plants have reticulate venation in their leaves. (False)
Reason : Some plants, like grasses, have parallel venation.
3. Grouping helps in studying plants and animals more easily based on their similarities and differences. (True)
4. Fibrous roots are commonly found in plants with reticulate venation. (False)
Reason : Fibrous roots are found in plants with parallel venation
5. A taproot system consists of one main root with smaller roots arising from it. (True)
6. Amphibians can live only on land. (False)
Reason : Amphibians can live both on land and in water
7. Herbs are plants that have soft, green stems. (True)
8. The habitat of a camel can be both hot and cold deserts. (True)
Question / Answers
1. What is biodiversity?
Answer: Biodiversity refers to the variety of living organisms, including plants and animals, in a particular region.
2. How are plants grouped based on their height and stems?
Answer:
- Herbs: Small plants with soft stems (e.g., tomato).
- Shrubs: Medium-sized plants with woody stems (e.g., rose).
- Trees: Large plants with thick, woody stems (e.g., mango).
3. What are the different types of venation in leaves?
Answer:
- Reticulate venation: Net-like vein pattern (e.g., hibiscus).
- Parallel venation: Veins run parallel (e.g., grass).
4. What are the two types of root systems in plants?
Answer:
- Taproot: A single main root with smaller side roots (e.g., mustard).
- Fibrous root: A bunch of thin roots of similar size (e.g., grass).
5. What is an adaptation? Give an example.
Answer: Adaptation is a special feature that helps a plant or animal survive in a specific environment. For example, camels have humps to store food and wide hooves to walk on sand.
6. What is a habitat?
Answer: A habitat is the place where plants and animals live, providing food, water, shelter, and other survival needs.
7. How do plants and animals depend on each other?
Answer: Plants provide food and shelter to animals, while animals help in pollination and seed dispersal. Both are interdependent for survival.
8. What are the main differences between monocot and dicot plants?
Answer:
- Monocot: One cotyledon in the seed, parallel venation in leaves, fibrous roots (e.g., wheat).
- Dicot: Two cotyledons in the seed, reticulate venation in leaves, taproot system (e.g., chickpea).
9. What features help animals survive in their habitats?
Answer: Adaptations like streamlined bodies of fish for swimming, long legs of camels for walking on sand, and the conical shape of trees in snowy regions help animals and plants survive in their specific habitats.
10. What is the difference between terrestrial and aquatic habitats?
Answer:
- Terrestrial habitats: Land habitats like forests, deserts, and mountains.
- Aquatic habitats: Water habitats like ponds, lakes, rivers, and oceans.
11. Why is grouping of plants and animals important?
Answer: Grouping helps to study and understand the similarities and differences among plants and animals, making it easier to classify and learn about them.
12. Give an example of an animal adapted to live in a desert.
Answer: The camel is adapted to live in the desert with its wide hooves for walking on sand, the ability to store food in its hump, and minimal water loss through urine and sweat.
13. What happens if a plant or animal’s habitat is damaged?
Answer: If a habitat is damaged, plants and animals lose their homes, food, and other resources, which can lead to the loss of biodiversity and extinction of species.
14. What is the significance of Sacred Groves in biodiversity conservation?
Answer: Sacred Groves are protected patches of forests maintained by local communities. They help conserve biodiversity by preserving the plants and animals in these areas.
15. What projects has India initiated to protect biodiversity?
Answer: India has initiated projects like Project Tiger (1973) to protect Bengal Tigers and the Cheetah Reintroduction Project (2022) to restore the population of cheetahs.
16. What is the difference between the habitats of camels in hot and cold deserts?
Answer: Camels in hot deserts have long legs and wide hooves to walk on sand, while camels in cold deserts have shorter legs to move easily in mountainous regions and grow long hair to survive cold winters.
17. Why do rhododendron plants differ in different regions?
Answer: Rhododendrons adapt to their surroundings. In Nilgiris, they are shorter with smaller leaves to survive strong winds, while in Sikkim, they are taller to suit the local environment.
18. How do adaptations help animals in extreme climates?
Answer: Adaptations like thick fur in cold regions, streamlined bodies for swimming, or fleshy stems to store water in deserts enable animals to survive in extreme climates.
19. What is a monocotyledon plant? Give an example.
Answer: A monocotyledon plant has one cotyledon in its seed, parallel venation in its leaves, and a fibrous root system. Example: Maize.
20. What is the role of adaptations in biodiversity?
Answer: Adaptations allow plants and animals to survive in specific habitats, contributing to the diversity of life in different regions.
Very good questions for the study of children before exam stats