Exercise: How do Organism Reproduce?
Multiple Choice Questions
Fill in the Blanks
- Hydra reproduces by ________.
- The full form of DNA is ________.
- In vegetative propagation, plants produced are _______ similar to parents.
- The fertilized egg gets implanted in the lining of the _______.
- _______ leads to the creation of new individuals in unicellular organisms.
- The fusion of male gamete and female gamete is called _______.
- The pollen grains of one flower are transferred to another flower, then this is called ______.
- Asexual reproduction takes place through budding in _______.
Answers
(1). Budding, (2). Deoxyribo Nucleic Acid, (3). Genetically, (4). Uterus, (5). Fission, (6). Fertilisation, (7). Cross pollination, (8). Hydra
True/ False
- Cells use chemical reactions to build copies of their DNA. (T/ F)
- Stamens and pistil are the reproductive parts of a flower.” (T/ F)
- Amoeba reproduces sexually. (T/ F)
- If the fallopian tube in the female is blocked, the egg will be able to reach the uterus. (T/ F)
- The embryo gets nutrition from the mother’s blood with the helps of a special tissue called placenta. (T/ F)
- Full form of D.N.A. is Deoxyribose Nucleic Acid. ” (T/ F)
- Hydra can be cut into many pieces each piece grows into a complete organism. This is known as regeneration. (T/ F)
Answers
(1). True, (2). True, (3). False, (4). False, (5). True, (6). True, (7). True
One-Word Answer
- Is fertilization possible without pollination?
- What is the role of prostate gland?
- Which part of the flower develops into a seed and a fruit?
- Which structures need to be blocked in males and females respectively to prevent pregnancy?
- Give an example of an organism which reproduces by fragmentation.
- Out of the following plants which two plants are reproduced by vegetative propagation? Jasmine, Wheat, Mustard, Banana.
- How many days are the period of menstruation?
- From where does the embryo get nutrition?
Answers
- No, fertilization is followed by pollination.
- It adds alkaline secretion into the semen which is essential for sperm activity.
- Ovule develops into a seed, while ovary ripens to form a fruit.
- Vas deferens in males (Vasectomy), fallopian tube in females (Tubectomy).
- Spirogyra
- Jasmine, Banana
- 2 to 8 days
- placenta
Match the column
| Section A | Section B |
|---|---|
| 1). Bisexual Flower | a). Ovule |
| 2). Reproduction in hydra | b). Hibiscus |
| 3). Female | c). Budding |
| 4). Regeneration | d). Planaria |
| 5). Unisexual flower | e). Binary fission |
| 6). Male reproductive part | f). Testes |
| 7). Amoeba | g). Papaya |
Answers
(1). > (b), (2). > (c), (3). > (a), (4). > (d), (5). > (g), (6). > (f), (7). > (e)

