Coir (Etymological origin: from Tamil and Malayalam - kayar - cord) is a coarse fibre extracted from the fibrous outer shell of a coconut. Coir fibres are found between the husk and the outer shell of a coconut. The individual fibre cells are narrow and hollow, with thick walls made of cellulose. They are pale when immature but later become hardened and yellowed as a layer of lignin is deposited on their walls.

Correct Option: B

Coir (Etymological origin: from Tamil and Malayalam - kayar - cord) is a coarse fibre extracted from the fibrous outer shell of a coconut. Coir fibres are found between the husk and the outer shell of a coconut. The individual fibre cells are narrow and hollow, with thick walls made of cellulose. They are pale when immature but later become hardened and yellowed as a layer of lignin is deposited on their walls.

Cork cambium undergoes periclinal division and cuts off thick walled suberised dead cells towards outside i.e. phellem (cork) and it cuts off thin walled living cells i.e., phelloderm on inner side.

Correct Option: B

Cork cambium undergoes periclinal division and cuts off thick walled suberised dead cells towards outside i.e. phellem (cork) and it cuts off thin walled living cells i.e., phelloderm on inner side.

A solid style has transmission tissue which has large intercellular spaces. It allows growth of pollen tube in pistil.

Correct Option: A

A solid style has transmission tissue which has large intercellular spaces. It allows growth of pollen tube in pistil.

Sunflower is a dicotyledonous plant. Hence its embryo has two cotyledons. Plants like maize are monocotyledonous and hence have a single cotyledon in the embryo.

Correct Option: B

Sunflower is a dicotyledonous plant. Hence its embryo has two cotyledons. Plants like maize are monocotyledonous and hence have a single cotyledon in the embryo.

In roots, the root hairs develops from zone of maturation. This zone is differentiated zone thus bearing root hairs.

Correct Option: D

In roots, the root hairs develops from zone of maturation. This zone is differentiated zone thus bearing root hairs.