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Describe the important characteristics of gymnosperms.
Biology
Biology

Class 11

NCERT

Publisher:
NCERT
Subject:
Biology
1

Chapter 1: The Living World

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2

Chapter 2: Biological Classification

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3

Chapter 3: Plant Kingdom

12 questions

Q1
Match the following (column I with column II).
Q2
Describe the important characteristics of gymnosperms.
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4

Chapter 4: Animal Kingdom

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5

Chapter 5: Morphology of Flowering Plants

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6

Chapter 6: Anatomy of Flowering Plants

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7

Chapter 7: Structural Organization in Animals

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8

Chapter 8: Cell: The Unit of Life

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9

Chapter 9: Biomolecules

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10

Chapter 10: Cell Cycle and Cell Division

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11

Chapter 11: Transport in Plants

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12

Chapter 12: Mineral Nutrition

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13

Chapter 13: Photosysnthesis in Higher Plants

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14

Chapter 14: Respiration in Plants

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15

Chapter 15: Plant Growth and Development

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Chapter 16: Digestion and Absorption

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Chapter 17: Breathing and Exchange of Gases

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Chapter 18: Body Fluids and Circulation

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Chapter 19: Excretory Products and their Elimination

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Chapter 20: Locomotion and Movement

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21

Chapter 21: Neural Control and Coordination

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Chapter 22: Chemical Coordination and Integration

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Describe the important characteristics of gymnosperms.

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Biology (NCERT)

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Important features of gymnosperms :
1. The term gymnosperm refers to plants with naked seeds (gymnos – naked, sperma – seeds), i.e., the seeds of these plants are not enclosed in fruits.
2. The plant body ranges from medium to tall trees and shrubs. The giant redwood tree Sequoia is one of the tallest trees in the world.
3. The root system consists of tap roots. The coralloid roots present in Cycas are associated with nitrogen-fixing cyanobacteria.
4. The stem can be branched (as in Pinus and Cedrus) or unbranched (as in Cycas).
5. The leaves can be simple (as in Pinus) or compound (pinnate in Cycas). The leaves are needle-like, with a thick cuticle and sunken stomata. These help in preventing water loss.
6. Gymnosperms are heterosporous. They bear two kinds of spores – microspores and megaspores.
7. Flowers are absent. The microsporophylls and megasporophylls are arranged to form compact male and female cones.
8. Pollination occurs mostly through wind and pollen grains reach the pollen chamber of the ovule through the micropyle.
9. The male and female gametophytes are dependent on the sporophyte.
10. The seeds contain haploid endosperms and remain uncovered.
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Question Text
Describe the important characteristics of gymnosperms.
TopicPlant Kingdom
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes25