Gymnosperms and Angiosperms - UNSOLVED PRACTICE SET
Chapter: Diversity in Living Organisms | Topic: Gymnosperms and Angiosperms
GYMNOSPERMS AND ANGIOSPERMS - UNSOLVED PRACTICE SET
Topic: Gymnosperms and Angiosperms
Multiple Choice Questions
Q1. Gymnosperms are called "naked-seeded" plants because their seeds are:
- Enclosed in fruits
- Not enclosed in an ovary or fruit
- Covered by a hard shell
- Found inside cones only
Q2. Angiosperms are also called:
- Naked-seeded plants
- Flowering plants
- Non-vascular plants
- Seedless plants
Q3. The ovules in gymnosperms are borne on:
- Inside an ovary
- On open megasporophylls or cones
- Inside a fruit
- On the surface of leaves
Q4. Which of the following is a gymnosperm?
- Mango tree
- Pine tree (Pinus)
- Rose plant
- Wheat plant
Q5. Double fertilisation is a characteristic feature of:
- Gymnosperms
- Angiosperms
- Bryophytes
- Pteridophytes
Short Answer Questions
Q6. Differentiate between gymnosperms and angiosperms in terms of seeds, flowers, and fruits.
Q7. What is double fertilisation? Explain why it is unique to angiosperms.
Q8. Describe the structure of a typical flower. Label the male and female reproductive parts.
Q9. Why are angiosperms considered the most advanced and diverse group of plants?
Long Answer Questions
Q10. Describe the life cycle of a gymnosperm (Pinus) with a well-labelled diagram. Explain how the male and female cones are involved in reproduction.
Q11. Compare gymnosperms and angiosperms in a tabular format based on: seed structure, flower presence, fruit formation, vascular bundles, leaf type, and examples.
APPLICATION / ANALYSIS
Q12. In the Himalayan region of Uttarakhand, pine forests (gymnosperms) dominate the landscape at higher altitudes, while oak and rhododendron forests (angiosperms) are found at lower altitudes.
(a) Why are gymnosperms like pine able to survive at higher altitudes where temperatures are very low? Explain THREE adaptations.
(b) The wood of pine trees is called "softwood," while the wood of oak is called "hardwood." What causes this difference in wood texture?
(c) A student argues: "Since angiosperms are more advanced, they should be able to survive at higher altitudes than gymnosperms." Do you agree? Give reasons.
Q13. During a visit to a mango orchard in Ratnagiri, Maharashtra, a student observes the mango trees in full bloom.
(a) To which group of plants does the mango tree belong? What is the significance of double fertilisation in mango production?
(b) Why do mango farmers often keep beehives in their orchards during the flowering season? Explain the ecological relationship.
(c) A farmer notices that some mango flowers fall off without producing fruit. What could be the possible reasons? Suggest TWO solutions.