How do seeds and fruits affect, where and how plants can survive? Class 9

How do seeds and fruits affect, where and how plants can survive? Class 9

Question 1.

How do seeds and fruits affect, where and how plants can survive? Class 9

Answer:

Seeds and fruits greatly expand where and how plants can survive: Seeds protect the developing embryo and contain stored food, which helps the young plant survive until it can photosynthesize on its own. Seeds allow plants to survive unfavourable conditions (drought, cold) in a dormant state and germinate when conditions improve. Fruits help in dispersal of seeds to new locations - far from the parent plant. This is done by different agents such as insects, birds, animals, wind, and water. Fruits make seed dispersal efficient and allow plants to colonise new and varied environments.

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Question 2.

An earthworm (annelida) and a beetle (arthropoda), both have segmented bodies but the beetle has a hard external skeleton. How does the beetle's external skeleton help it survive? Class 9

Answer:

The beetle's hard external skeleton (exoskeleton) helps it survive in the following ways: It provides protection against predators and physical injury. It reduces water loss from the body, which allows arthropods to survive in dry and exposed environments where softer-bodied animals like earthworms would dry out and die. It supports powerful muscles, enabling effective movement and locomotion. It protects internal organs from damage. In contrast, the earthworm (annelida) has a soft, segmented body without a hard external skeleton, which is why it is restricted to moist soil and water environments and cannot survive in dry conditions.