Explanation

• Crossing over occurs in Pachytene stage of Prophase I.
• Homologous chromosomes are fully paired and exchange genetic material at this stage.
• This leads to new gene combinations.

Last verified on 20-05-2026

Explanation

• Foundation Date: 25 September 1969
• Headquarters: Jeddah, Saudi Arabia
• Official Languages: Arabic, English, French
• Total Members: 57 countries
• First Summit: Rabat, Morocco
• Significance: Largest international organization after the UN.

Last verified on 10-05-2026

Explanation

• Apiculture is the practice of rearing honeybees for honey and wax production.
• Helps in pollination and increasing crop yields.
• Honey, beeswax, and propolis are valuable products from apiculture.

• Sericulture → Rearing of silk worms.
• Silviculture → Cultivation of trees and forests.

Last verified on 30-01-2026

Explanation

Explanation

DOCX is the newer version of DOC, the original official Microsoft Word file format.

Microsoft Word 97 - 2003 Document extension (.doc).

Microsoft Word 2007 to till date Document extension (.docx).

Explanation

 Microscope Diopter

This is a simple turning device which is either attached to the outside of an eyepiece tube of a binocular head, or to the eyepiece itself. When the diopter is turned, it raises or lowers the eyepiece to adjust the focus for each eye.

Explanation

Explanation

The kidney is the primary excretory organ in fishes, responsible for osmoregulation and excretion of nitrogenous wastes.

However, gills and skin also play minor roles in excretion.

Explanation

Hydrogen is the most abundant element in the universe.

it is about 75 percent of its normal matter and was created in the Big Bang.

Additional information:

Oxygen is the most abundant element in the earth`s crust.

Calcium is the most abundant mineral in the human body.

Explanation

• the G7 ( group of seven) is an Organization of the world's seven largest advanced economies.

  **

  The G7 is an informal grouping of seven of the world's advanced economies
  

  **

  The Group of Seven (G-7) is an intergovernmental organization made up of the world's largest developed economies: France, Germany, Italy, Japan, the United States, the United Kingdom, and Canada.

  the (G7) group of seven is an Organization first established in1975