The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also referred to as cellulosic or lignocellulosic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.

Correct Option: A

The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also referred to as cellulosic or lignocellulosic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.

An isogenic graft or isograft is a graft between genetically identical individuals(i.e. monozygotic twins). Typically, isografts are either grafts between animals of a single highly inbred strain, between the F1 hybrids produced by crossing inbred strains, or between identical twins.

Correct Option: B

An isogenic graft or isograft is a graft between genetically identical individuals(i.e. monozygotic twins). Typically, isografts are either grafts between animals of a single highly inbred strain, between the F1 hybrids produced by crossing inbred strains, or between identical twins.

In an autosomal dominant disorder, the mutated gene is a dominant gene located on one of the nonsex chromosomes (autosomes). The early-onset form of Alzheimer disease is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent.

Correct Option: D

In an autosomal dominant disorder, the mutated gene is a dominant gene located on one of the nonsex chromosomes (autosomes). The early-onset form of Alzheimer disease is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent.

An algal bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and are recognized by the discoloration in the water from their pigments. Algal blooms are the consequence of the enrichment of a water body with nutrients, usually with an excess amount of nutrients. This is known as eutrophication.

Correct Option: C

An algal bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and are recognized by the discoloration in the water from their pigments. Algal blooms are the consequence of the enrichment of a water body with nutrients, usually with an excess amount of nutrients. This is known as eutrophication.

An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or colorblindness. Alleles are also called alleleomorphs. If the two alleles are identical, the individual is called a homozygote; when the two alleles are different, the individual is a heterozygote.

Correct Option: C

An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or colorblindness. Alleles are also called alleleomorphs. If the two alleles are identical, the individual is called a homozygote; when the two alleles are different, the individual is a heterozygote.