Pollen

-
Pollen or pollen grains are the male gametes of flower. When you touch a ripen flower sometimes you realized that your fingers or sleeves got colored by some kind of dusty particles. Those particles are called pollen or pollen grains. During fertilization pollen go to land in the stigma with the help of vectors like insects or animals or wind. After landing in the stigma the pollen will produce tube like projection to reach the ovary and fertilize the egg in there.


See: Typical flower

Comments

Post a Comment

Popular posts from this blog

What is Chalisa?

-
Image
Chalisa is group of 40 turkish nobles very close to the ruler. This group of nobles was particularly formed to suppress the other nobles who might revolt against the emperor. In Indian medieval history the term was introduced and  founded by a Turkish emperor, Muhammad Ghori who is popularly known as the greatest slave emperor in the Medieval India. It is also known as Turkan-i-Chahalgani. It's a kind of secret agency of nobles that work inside out to put other nobles under control. Amongst the 40 members of the Turkan-i-Chahalgani or Chalisa, Balban was one of them. Balban later on seized power and became the emperor himself.
Read more

life sucked before the green revolution, sucked after it too, meaning

-
Image
"Life of people has sucked in the period before the green revolution and even after it"  Green Revolution is the revolution in agriculture around the world Green Revolution involves the supply of  modern practices such as water, fertilizer, and chemical pesticides The period in the 1960’s was known as the green revolution. Green means green color and revolution means great development. Combining green and revolution makes the green revolution. Green revolution refers to the great advancement in the production of food crop and, crop production has improved so much so to the level that farmers saw their excess produce ready to be sold out into the market. life of people sucked before the green revolution Crop yields prior to the Green Revolution was very poor Prior to the Green Revolution people in the then underdeveloped countries like India, Pakistan, Nepal, Nigeria, the Philippines, and several other newly independent nations were living in half stomach
Read more

Terrace Farming

-
Image
Terrace farming is a method of doing agriculture in hilly areas where the hill sides are being cut open into terraces as shown in this photo Terrace Farming This type of practice prevents the fast flow of rain water in the hilly field ans hence it prevents soil erosion too. Terrace farming is practice across the world; in India, Nepal, China, Brazil, Nigeria etc
Read more

Bangar - alluvial soil

-
Image
Bangar alluvial soil is also known as Bhangar soil or old alluvial in India. It is less fertile than khadar . Bangar alluvial soil less fertile and less productive than khadar. This type of soil is mostly found near the old river banks in the plains or in the upper reaches of rivers. Based on the age of formation and their fertility, alluvial soils are grouped into two groups viz - Bangar alluvial soil and Khadar alluvium . Bangar Old alluvial is full of rock and gravel in upper reaches of Brahmaputra in Assam The river course always changes with the change of time. The river bank will not follow the same reute forever. When its bank becomes shallow as a result of too much deposits the river will change its course and this leads to the lesser deposits of the new alluvial soil in the bank. The khadar soil in the old river bank will slowly lose their finer texture and their fertility and then they will be known as Bangar or old alluvial. Khadar New alluvial along
Read more

4 steps SOIL PREPARATION done before growing a new crop?

-
Image
Proper soil preparation should be done before growing a new crop. Every crop plant lives in the soil. It can be a crop as tiny as a pea to the biggest fruit plants like mango trees all of them depend on the soil for their nutritional needs and water requirement. Soil gives plants a support to their spreading root system. It gives all the minerals, vitamins, macro and micronutrients that are necessary for the healthy growth and development of the crops. Farmers who plant crops and vegetables should know well about the growing season of and when to do the soil preparation beforehand. Proper preparation of soil ensures good crops and ultimately great yield and happiness to a farmer. Soil preparation refers to the process of loosening the soil particles by turning them with the help of a hoe or a plow (oxen driven or tractor driven plow) and the loosened and finer soil particles are then pushed across the flat surface of the garden to make it level (this is called soil leveling).
Read more

What is Joint Forest Management? Why is it important?

-
Joint forest management is one of the latest methods that was developed to bring about forest management strategy that is more effective and last longer. It is known in short as JFM. Through JFM conservation procedure, local people along with the forest officials should be involved in sorting out various available resources to protect the forest from the interference of intruders, poachers and indiscriminate killers of forest resources. This idea that local people should be included in the conservation of their forest and its biodiversity was considered noble and practical. The term as an idea developed in India in the 1980s.
Read more

Find more terms here

Show more