|1 Crore+ students have signed up on EduRev. Have you?|
Which one of the following is obtained from animals?
Wool is mainly obtained by shearing fleece from living animals, but pelts of slaughtered sheep are sometimes treated to loosen the fibre, yielding an inferior type called pulled wool.
Animal husbandry is the scientific management of
(i) Animal breeding
(ii) Culture of animals
(iii) Animal livestock
(iv) Rearing of animals
Animal husbandry is the farming or management of animal livestock which includes various aspects such as animal's shelter, feeding, health and disease control. As animal husbandry is scientific management of farm animals, it serves many uses for human beings.
It helps in enhancing milk production
It increases egg production
It increases meat production
It increases fish production
It helps in the proper management of agricultural wastes.
So option D is correct
Ploughing helps in:
Which are the different traditional methods of irrigation?
Chain pump: A chain pump consists of two large wheels connected by a chain.
Dhekli: It is a process of drawing water from a well or such similar source.
Rahat: Rahat is a technology of manpower for lifting water from well. It is completely made of iron.
Like Paddy, the method of sowing seeds of tomato is
In agriculture, transplantation is the indirect method of seeding. In this method, a seed is grown in a nursery bed or a greenhouse. After some time, the seed grows into seedlings and are then transferred to the field. It is common in some plants like tomato, eggplant, peppers, fruit trees, African oil palm, coconut and many ornamental crops. This method is important for extending the growing season, protecting young plants from diseases and pests. It is also important for avoiding germination problems seen in the method of direct seeding.
Weeds affect the crop plants by
Weeds are nothing but unwanted crops that grow along with the main crop. Thus, they compete with the main crop for sunlight, water, nutrients, and space and thus reduce the resources available to them. In this way, they hamper the growth of the main crop.
I am a plant; I grow in crop fields. Farmers pluck me. I do not know the reason. Can you tell who I am?
I am a weed: Weeds are undesirable plants which grow in an agricultural area. They compete with the crop for water and soil nutrients. Some weeds produce toxic substances which damage neighbouring crops. They also provide shelter for insects that may decrease crop yield. Hence the farmer plucks the weed.
State whether the given statement is True or False: Cod liver oil is a rich source Of Vitamin D and can be obtained by fish.
Cod liver oil is a rich source of vitamin D and can be obtained by fish. So, the given statement is True.
Cutting the crop is the first operation in the harvesting process. Separation of grain from chaff by blowing a current of air through the grain is called winnowing. The process of detaching the grains from the ear head, cob or pod is called threshing. It is basically the removal of grains from the plant by striking, treading or rupturing.
The last step in crop production is
The final step is Harvesting, and Sickles are usually used for harvesting.
Which of the following is also called unwanted plants?
Weeds are the unwanted or undesirable plants as they compete with desirable crops in the field for nutrients, sunlight, and interfere with crops' growth.
Nowadays, the seed is sown in the field using
A seed drill is a sowing device that positions seeds in the morning and then covers them. The seed drill sows the seeds at equal distances and proper depth, ensuring that the seeds get covered with soil and are saved from being eaten by birds. It is an efficient method used to save time. Thus, the correct answer is option B.
State whether the given statement is True or False: The animals reared at home or in farms, have to be provided with proper food, shelter and care.
The animals reared at home or in farms, have to be provided with proper food, shelter and care to protect them from various diseases and to maintain the quality of the animals reared. So, the given statement is True.
While ploughing a plank is used to break the soil crumbs into
Depending upon the animals available on a farm, ploughing is done using horses and camels to pull ploughs. A plank is used to break the crumbs into fine soil. The next step is to level the ground with the help of a leveller.
Which of the following statements can be regarded as an advantage of seed drill?
Nowadays, the seed drill is used for sowing with the help of tractors. This tool sows the seeds uniformly at proper distances and depths. It ensures that seeds get covered by the soil after sowing. This prevents damage caused by birds. Sowing by using a seed drill saves time and labour.
So option D is true