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Step-by-Step Explanation
Step 1: Understand the Concept of Composite Fruit
A composite or multiple fruit is formed when multiple flowers in an inflorescence fuse together to produce a single, larger fruit structure. Each flower contributes a “fruitlet,” and these fruitlets together make the composite fruit. Two main types of composite fruits are:
Sorosis, as in mulberry, pineapple, and jackfruit.
Syconus, as in fig, peepal, and banyan.
Step 2: Identify the Fruits in the List
We are given the following plants and need to determine which have composite fruits: walnut, poppy, radish, fig, pineapple, apple, tomato, and mulberry.
Walnut: This is a single-seeded nut (not composite).
Poppy: Produces a capsule fruit (not composite).
Radish: Edible portion is a root; it does not form any composite fruit.
Fig: Produces a syconus type of composite fruit.
Pineapple: Produces a sorosis type of composite fruit.
Apple: Classified as a simple (false) fruit, not composite.
Tomato: A simple berry, not composite.
Mulberry: Produces a sorosis type of composite fruit.
Step 3: Count the Composite Fruits
The plants among the list that form composite fruits are:
Fig
Pineapple
Mulberry
Hence, there are three such plants in the given list.
