Every question from this NCERT chapter, with a detailed explanation.
Which one of the following is a single-celled organism that reproduces by budding?
Which of the following features are adaptive for seeds dispersed by wind? 1. Wings 2. Light weight 3. Hairy structures 4. Spiny hooks Select the correct answer using the code given below:
Match List I with List II and select the correct answer using the code given below: List I | List II A. Drumstick | 1. Wind B. Coconut | 2. Animals C. Xanthium | 3. Water D. Castor | 4. Bursting
Which one of the following plants possesses a fruit with a fibrous or spongy outer coat to facilitate dispersal by water?
Consider the following statements about the dispersal of Xanthium seeds: 1. They are dispersed by wind due to their light weight. 2. They possess hooks which get attached to the bodies of animals. 3. They are carried to distant places by animals. Which of the statements given above is/are correct?
What is the functional significance of the hairy structures associated with the fruits of sunflower?
With reference to seed dispersal, consider the following pairs: 1. Maple : Winged seed 2. Aak (Madar) : Hairy seed 3. Urena : Spiny seed with hooks How many of the above pairs are correctly matched?
Consider the following statements regarding the reproduction in yeast: 1. It is a multicellular organism. 2. It requires sufficient nutrients to multiply. 3. A root-like projection called a tuber arises from the parent cell. Which of the statements given above is/are correct?
Why are non-flowering plants like mosses and ferns predominantly found in moist environments?
Consider the following statements about the "zygote" in plants: 1. It is formed after the process of fertilisation. 2. It is the last cell of the old generation and dies immediately. 3. It develops into an embryo. Which of the statements given above is/are correct?
Which of the following is a characteristic difference between asexual and sexual reproduction in plants?
In a mature seed, the embryo is enclosed within which one of the following structures?
Consider the following statements regarding the "eyes" of a potato and the "buds" of Bryophyllum: 1. Only potato eyes are vegetative structures, while Bryophyllum buds are reproductive. 2. Potato eyes are located on the stem, while Bryophyllum buds are on the leaf. 3. Both require burial in soil to germinate. Which of the statements given above is/are correct?
Which of the following statements is NOT correct regarding the reproduction in fungi?
Which of the following plants disperses its seeds when the fruit bursts with a sudden jerk?
With reference to the vegetative parts of a plant, consider the following statements: 1. Roots, stems, and leaves are classified as the vegetative parts of a plant. 2. Flowers are considered vegetative parts because they support the growth of the plant. 3. Vegetative propagation allows plants to produce new individuals without the use of seeds. Which of the statements given above is/are correct?
Consider the following statements regarding vegetative propagation in plants: 1. Plants produced by this method take longer to grow compared to those grown from seeds. 2. New plants produced are exact copies of the parent plant. 3. It involves the production of new plants from roots, stems, leaves, or buds. Which of the statements given above are correct?
Consider the following pairs of plants and their mode of vegetative propagation: 1. Rose : Stem cutting 2. Bryophyllum : Leaf buds 3. Sweet Potato : Root 4. Ginger : Stem How many of the above pairs are correctly matched?
Which one of the following plants reproduces through buds present in the margins of its leaves?
With reference to asexual reproduction in simple organisms, consider the following statements: 1. Yeast reproduces by a process called fragmentation. 2. Algae multiply rapidly by fragmentation when water and nutrients are available. 3. A yeast cell reproduces primarily through the formation of spores. Which of the statements given above is/are correct?
Consider the following statements regarding the reproduction of Algae: 1. Algae can reproduce asexually through spore formation. 2. When nutrients are available, algae reproduce exclusively by seed formation. 3. An alga breaks into fragments, each of which grows into a new individual. Which of the statements given above is/are correct?
In the context of vegetative propagation, what is the 'eye' of a potato?
With reference to spore formation in plants, consider the following statements: 1. Spores are sexual reproductive bodies. 2. Spores possess a hard protective coat to withstand unfavourable conditions. 3. Under favourable conditions, a spore germinates and develops into a new individual. Which of the statements given above is/are correct?
Which of the following groups of organisms reproduce by means of spores?
Consider the following statements about the fungus on bread: 1. It grows from spores present in the air. 2. It reproduces sexually through the fusion of gametes. 3. Its reproductive bodies lack any protective coating. Which of the statements given above is/are correct?
With reference to artificial vegetative propagation, what does the term 'cutting' refer to?
With reference to the reproductive parts of a flower, consider the following statements: 1. Stamens represent the male reproductive part. 2. The pistil represents the male reproductive part. 3. A bisexual flower contains both stamens and pistil. Which of the statements given above is/are correct?
Which of the following sets of plants produces unisexual flowers?
Consider the following statements regarding the structure of a stamen: 1. It consists solely of a filament without an anther. 2. The anther contains pollen grains. 3. Pollen grains produce the male gametes. Which of the statements given above is/are correct?
Which of the following is NOT a part of the pistil in a flower?
With reference to the formation of gametes in plants, consider the following statements: 1. The male gamete is formed inside the pollen grain. 2. The female gamete is formed in the filament. 3. The zygote is formed within the anther. Which of the statements given above is/are correct?
Consider the following statements about bisexual flowers: 1. They contain both stamens and pistil. 2. Corn and Papaya are examples of plants with bisexual flowers. 3. They can perform self-pollination more easily than unisexual flowers. Which of the statements given above is/are correct?
Match List I with List II and select the correct answer using the code given below: List I | List II A. Anther | 1. Contains ovules B. Filament | 2. Produces male gametes C. Ovary | 3. Receives pollen D. Stigma | 4. Supports the anther
With reference to pollination, consider the following statements: 1. It is the transfer of pollen from the stigma to the anther. 2. If pollen lands on the stigma of the same flower, it is called self-pollination. 3. Pollen grains have a tough protective coat to prevent them from drying up. Which of the statements given above is/are correct?
Consider the following statements regarding cross-pollination: 1. It occurs when pollen lands on the stigma of a flower of a different plant of the same kind. 2. It occurs exclusively without the aid of any external agents. 3. It results in offspring that are genetically identical to the single parent plant. Which of the statements given above is/are correct?
Which of the following is the correct sequence of events in sexual reproduction in plants?
With reference to the agents of pollination, consider the following statements: 1. Pollen grains carried by wind are usually light and dry. 2. Insects generally avoid flowers and do not carry pollen. 3. Water can act as an agent for carrying pollen grains. Which of the statements given above is/are correct?
Consider the following statements about the pollen tube: 1. It develops from the ovule before pollination. 2. It transports the male gamete to the ovule. 3. It is a structure involved in sexual reproduction. Which of the statements given above is/are correct?
In a flowering plant, where is the female gamete located prior to fertilisation?
With reference to the formation of fruits and seeds, consider the following statements: 1. The fruit is the ripened ovary. 2. The seed develops from the stigma. 3. The seed coat develops from the zygote. Which of the statements given above is/are correct?
Consider the following statements regarding seed dispersal: 1. It prevents competition between the plant and its own seedlings for sunlight and water. 2. It restricts plants to their original habitat and prevents expansion. 3. It ensures that seeds are spread to different places for better survival. Which of the statements given above is/are correct?
Which of the following is a correct match of the plant and its vegetative part used for reproduction?
Which one of the following statements best defines the biological process of reproduction?
Consider the following statements regarding the "wing" of a maple seed: 1. It is a modification of the leaf. 2. It helps the seed to be carried by the wind. 3. It is found in maple seeds but absent in drumstick seeds. Which of the statements given above is/are correct?
Which one of the following statements is correct regarding the distinction between a "bud" in yeast and a "bud" in a rose plant?
Consider the following statements about the advantages of vegetative propagation: 1. It allows plants to bear flowers and fruits earlier than those produced from seeds. 2. It is only suitable for plants that produce viable seeds. 3. It results in offspring that are exact copies of the parent plant. Which of the statements given above is/are correct?
With reference to the "embryo" in plants, consider the following statements: 1. It is formed directly from the pollen grain. 2. It is enclosed within the seed. 3. It is the result of the development of the zygote. Which of the statements given above is/are correct?
Which of the following plants produces bisexual flowers?
Which of the following is NOT a method of asexual reproduction in plants?
Consider the following statements about the "seed coat": 1. It protects the embryo. 2. It is formed from the ovary wall. 3. It promotes rapid germination even in the absence of water. Which of the statements given above is/are correct?
In the context of seed dispersal mechanisms, which one of the following plants primarily utilizes water for the transport of its seeds?
Consider the following statements regarding "unisexual flowers": 1. They contain either only pistil or only stamens. 2. Mustard and Rose are examples of plants with unisexual flowers. 3. Both male and female unisexual flowers may be present on the same plant. Which of the statements given above is/are correct?
Consider the following statements regarding the sequence of events in the reproduction of a flowering plant: 1. Pollination precedes fertilisation. 2. Seed dispersal occurs before fruit formation. 3. Fertilisation results in the formation of pollen grains. Which of the statements given above is/are correct?
What does the term "hypha" refer to in the context of fungal structure?
Consider the following statements about "sporangium": 1. It is a structure found exclusively in flowering plants. 2. It contains spores. 3. It is a reproductive structure that produces spores. Which of the statements given above is/are correct?