Ecotype is the basic unit of Biosystematics. It is adapted to a particular environment but capable of producing fully fertile hybrids with other ecotypes. The term Ecotype was proposed by Turesson. According to him Ecotype is “an ecological unit to cover the product arising as a result of genotypical response of an ecospecies to a particular habitat.”

Correct Option: B

Ecotype is the basic unit of Biosystematics. It is adapted to a particular environment but capable of producing fully fertile hybrids with other ecotypes. The term Ecotype was proposed by Turesson. According to him Ecotype is “an ecological unit to cover the product arising as a result of genotypical response of an ecospecies to a particular habitat.”

Platelets, also called thrombocytes, are a component of blood whose function is to stop bleeding by clumping and clotting blood vessel injuries. Unlike red and white blood cells, platelets are not actually cells but rather small fragments of cells.

Correct Option: D

Platelets, also called thrombocytes, are a component of blood whose function is to stop bleeding by clumping and clotting blood vessel injuries. Unlike red and white blood cells, platelets are not actually cells but rather small fragments of cells.

Most of Earth’s oxygen comes from tiny ocean plants – called phytoplankton – that live near the water’s surface and drift with the currents. Like all plants, they photosynthesize – that is, they use sunlight and carbon dioxide to make food. Scientists believe thatphytoplankton contribute between 50 to 85 percent of the oxygen in Earth’s atmosphere (National Geographic).

Correct Option: D

Most of Earth’s oxygen comes from tiny ocean plants – called phytoplankton – that live near the water’s surface and drift with the currents. Like all plants, they photosynthesize – that is, they use sunlight and carbon dioxide to make food. Scientists believe thatphytoplankton contribute between 50 to 85 percent of the oxygen in Earth’s atmosphere (National Geographic).

Turner syndrome is a rare chromosomal disorder characterized by partial or complete loss (monosomy) of one of the X chromosomes that affects females. Individuals with Turner syndrome have only 45 chromosomes, including just a single X chromosome. This monosomic has a chromosome complement of 44 autosomes and one X chromosome (44+XO). The abnormal condition probably originates from exceptional egg or sperm with no X chromosome.

Correct Option: A

Turner syndrome is a rare chromosomal disorder characterized by partial or complete loss (monosomy) of one of the X chromosomes that affects females. Individuals with Turner syndrome have only 45 chromosomes, including just a single X chromosome. This monosomic has a chromosome complement of 44 autosomes and one X chromosome (44+XO). The abnormal condition probably originates from exceptional egg or sperm with no X chromosome.

Black soil is most suitable for the cultivation of cotton. The deep and medium black lava soil of the Deccan and Malwa plateaus is considered ideal, though it can be grown on alluvial and red soil as well. The black cotton soil is also known as regur.

Correct Option: B

Black soil is most suitable for the cultivation of cotton. The deep and medium black lava soil of the Deccan and Malwa plateaus is considered ideal, though it can be grown on alluvial and red soil as well. The black cotton soil is also known as regur.