1.
It is defined as the process in which an organism gives rise to young ones (offspring) similar to itself.
Correct Answer
A. Reproduction
Explanation
Reproduction is the correct answer because it refers to the process in which an organism produces offspring that are similar to itself. This can occur through sexual or asexual means, depending on the organism. Reproduction is essential for the continuation of a species and allows for the passing on of genetic information from one generation to the next.
2.
In plants, the fusion of male and female gametes (sex cells) from different individuals of the same species is called
Correct Answer
B. Cross pollination
Explanation
Cross pollination is the correct answer because it refers to the fusion of male and female gametes from different individuals of the same species. This process involves the transfer of pollen grains from the anther of one flower to the stigma of another flower, which can occur through various agents such as wind, water, or animals. Cross pollination promotes genetic diversity and increases the chances of successful reproduction in plants.
3.
The male reproductive part of the flower is ____
Correct Answer
D. Stamen
Explanation
The male reproductive part of a flower is called the stamen. It consists of two main parts: the filament and the anther. The filament is a long, slender stalk that supports the anther. The anther is the top part of the stamen and contains pollen sacs where pollen grains are produced. The stamen plays a crucial role in the process of pollination, where pollen is transferred from the anther to the female reproductive part of the flower, called the pistil.
4.
The female reproductive part of the flower is _____
Correct Answer
C. Pistil
Explanation
The correct answer is Pistil. The pistil is the female reproductive part of a flower. It is made up of three parts: the stigma, style, and ovary. The stigma is the sticky surface where pollen is deposited, the style is the tube that connects the stigma to the ovary, and the ovary contains the ovules which develop into seeds after fertilization.
5.
The following are parts of the pistil except ____
Correct Answer
C. Anther
Explanation
The given options are all parts of the pistil, which is the female reproductive part of a flower. The style is the long, slender part that connects the stigma to the ovary. The ovary contains the ovules, which are the structures that develop into seeds after fertilization. The stigma is the sticky surface at the top of the pistil that receives pollen during pollination. However, the anther is part of the stamen, which is the male reproductive part of the flower. It is responsible for producing and releasing pollen grains. Therefore, the anther is not a part of the pistil.
6.
Seeds are a matured____
Correct Answer
D. Ovules
Explanation
Ovules are a matured part of a plant's reproductive system. They are found within the ovary and contain the female reproductive cells, which when fertilized by pollen, develop into seeds. Ovules play a crucial role in the process of plant reproduction and are responsible for the production of new plants.
7.
Pollen grains are produced in the ____
Correct Answer
A. Anther
Explanation
Pollen grains are produced in the anther, which is the male reproductive organ of a flower. The anther is located at the top of the filament, and it is responsible for producing and releasing the pollen grains. The pollen grains contain the male gametes, which are necessary for fertilization to occur. The stigma and ovary are part of the female reproductive organs of a flower and are not involved in the production of pollen grains.
8.
It involves planting a young cutting off the stem with buds into moist soil. This develops roots that absorb nutrition from the soil and help in the growth of the new plant.
Correct Answer
A. Cutting
Explanation
Cutting is the correct answer because it involves planting a young cutting of a stem with buds into moist soil. This process allows the cutting to develop roots, which then absorb nutrition from the soil and support the growth of a new plant.
9.
When offspring is produced by a single parent with or without the involvement of gamete formation, the reproduction is sexual.
Correct Answer
B. False
Explanation
The given statement is incorrect. When offspring is produced by a single parent with or without the involvement of gamete formation, the reproduction is asexual, not sexual. Sexual reproduction involves the fusion of gametes from two parents to produce offspring with genetic variation.
10.
When two parents (opposite sex) participate in the reproductive process involving the fusion of male and female gametes it is called sexual reproduction.
Correct Answer
A. True
Explanation
Sexual reproduction is the process by which two parents, typically of opposite sexes, contribute their gametes (sperm and egg) to form a new offspring. This process involves the fusion of male and female gametes, resulting in genetic diversity in the offspring. Therefore, the given statement accurately describes sexual reproduction, making the answer "True".