1. Define germination.
2. Name the agents that help in the d
3. Why dispersal of seeds is necessary
4. What factors affect the growth and
5. Define crops and agriculture.
6. How can we protect crops?
Answers
Define germination.
Germination is the process by which an organism grows from a seed or similar structure.
Name the agents that help in the dispersal.
There are five main modes of seed dispersal : gravity, wind, ballistic, water, and by animals. Some plants are serotinous and onlydisperse their seeds in response to an environmental stimulus.
Why dispersal of seeds is necessary ?
Dispersal of seeds is very important for the survival of plant species. If plants grow too closely together, they have to compete for light, water and nutrients from the soil.Seed dispersal allows plants to spread out from a wide area and avoid competing with one another for the same resources.
What factors affect the growth ?
Environmental factors that affect plant growth include light, temperature,water, humidity, and nutrition. It is important to understand how these factors affect plant growth and development.
Define crops and agriculture.
Crop : A crop is a plant or animal product that can be grown and harvested extensively for profit or subsistence. Crops may refer either to the harvested parts or to the harvest in a more refined state. Most crops are cultivated in agriculture or aquaculture.
Agriculture : Agriculture is a primary activity that includes growing crops, vegetables, fruits, flowers and rearing livestock. Agriculture is a primary activity, as it is connected with the extraction and production of natural resources.
How can we protect crops ?
We can protect crops by the following ways -
- Pesticide-based approaches such as herbicides, insecticides and fungicides.
- Biological pest control approaches such as cover crops, trap crops and beetle banks.
- Barrier-based approaches such as agrotextiles and bird netting.
- Animal psychology-based approaches such as bird scarers.
- Biotechnology-based approaches such as plant breeding and genetic modification.
Question-1
Define germination.
Answer
Germination is the process by which an organism grows from a seed or similar structure.
Question-2
Name the agents that help in the dispersal.
Answer
There are five main modes of seed dispersal : gravity, wind, ballistic, water, and by animals. Some plants are serotinous and onlydisperse their seeds in response to an environmental stimulus.
Question-3
Why dispersal of seeds is necessary ?
Answer
Dispersal of seeds is very important for the survival of plant species. If plants grow too closely together, they have to compete for light, water and nutrients from the soil.Seed dispersal allows plants to spread out from a wide area and avoid competing with one another for the same resources.
Question-4
What factors affect the growth ?
Answer
Environmental factors that affect plant growth include light, temperature,water, humidity, and nutrition. It is important to understand how these factors affect plant growth and development.
Question-5
Define crops and agriculture.
Answer
Crop : A crop is a plant or animal product that can be grown and harvested extensively for profit or subsistence. Crops may refer either to the harvested parts or to the harvest in a more refined state. Most crops are cultivated in agriculture or aquaculture.
Agriculture : Agriculture is a primary activity that includes growing crops, vegetables, fruits, flowers and rearing livestock. Agriculture is a primary activity, as it is connected with the extraction and production of natural resources.
Question-6
How can we protect crops ?
Answer
We can protect crops by the following ways -
- Pesticide-based approaches such as herbicides, insecticides and fungicides.
- Biological pest control approaches such as cover crops, trap crops and beetle banks.
- Barrier-based approaches such as agrotextiles and bird netting.
- Animal psychology-based approaches such as bird scarers.
- Biotechnology-based approaches such as plant breeding and genetic modification.