NCERT Class 10 Science — Chapter 3: How do Organisms Reproduce?

How many of the following are listed as bacterial sexually transmitted infections: gonorrhoea, syphilis, warts, HIV-AIDS?

In which of the following organisms does the body break into fragments upon maturation, with each fragment growing into a new individual?

Which mode of asexual reproduction is characteristic of yeast, involving the formation of a small outgrowth?

In human reproduction, fertilisation normally occurs at, and implantation occurs at, respectively:

In certain simple animals like Hydra, a reproductive outgrowth forms at one site and later detaches as an independent organism. This process is known as:

With reference to vegetative propagation in plants, consider the following statements: 1. It can result in earlier flowering and fruiting than seed propagation. 2. It enables multiplication of plants that no longer produce seeds. 3. It helps maintain parental traits due to genetic similarity. 4. It is not used for grapes. Which of the statements given above are correct?

Match the plant or structure with its characteristic: List I | List II A. Papaya | 1. Male reproductive organ B. Hibiscus | 2. Female reproductive organ C. Stamen | 3. Unisexual flower D. Pistil | 4. Bisexual flower Select the correct answer using the code given below

Which structure provides the physiological connection between the maternal body and the developing embryo for nutrition and excretion?

The location of testes within the scrotum outside the abdominal cavity is essential for:

Assertion (A): The creation of a DNA copy is a basic event in reproduction. Reason (R): A newly copied DNA strand can survive and function independently without the original cellular apparatus.

Which structures in a flower serve as the principal reproductive organs containing the germ cells?

Which of the following organisms typically reproduces through the process of budding?

Match the organism with its mode of reproduction: List I | List II A. Amoeba | 1. Multiple fission B. Leishmania | 2. Budding C. Plasmodium | 3. Binary fission in any plane D. Yeast | 4. Binary fission oriented to body structure Select the correct answer using the code given below

Consider the following statements about bread mould: 1. The thread-like structures observed on bread are hyphae and are not reproductive parts. 2. The blob-on-a-stick structures are sporangia that contain spores. Which of the statements given above is/are correct?

In complex sexually reproducing organisms, which process primarily ensures the long-term maintenance of chromosome number across generations?

Consider the following statements about the male reproductive tract: 1. The vas deferens enters the kidney directly. 2. The urethra serves as a common passage for sperm and urine. 3. Secretions from accessory glands make transport easier and provide nutrition. Which of the statements given above are correct?

Assertion (A): Self-pollination guarantees the introduction of genetic variation in the offspring. Reason (R): Cross-pollination involves the transfer of pollen from the anther of one flower to the stigma of another flower.

Which plant can develop new individuals from adventitious buds that form along the leaf margin?

The male reproductive unit of a flower is technically termed the:

Consider the following statements after fertilisation in flowering plants: 1. The ovule is converted into a seed. 2. The ovary ripens to form a fruit. 3. Petals and sepals always persist in the fruit. Which of the statements given above are correct?

Match the floral structure with its description: List I | List II A. Stamen | 1. Contains ovules B. Pistil | 2. Houses the egg cell C. Ovary | 3. Male reproductive part D. Ovule | 4. Female reproductive part Select the correct answer using the code given below