NEET BIOLOGY

Detailed explanation-1: -Aphids feed mostly on the phloem sap of their host plant, which is high in sucrose and lacking in essential amino acids, resulting in an unbalanced diet [1, 2].

Detailed explanation-2: -In late pregnancy, the mean partial pressure of oxygen (P02) in maternal blood is considerably higher than in fetal blood. As a consequence, oxygen readily diffuses across the placenta from maternal to fetal blood.

Detailed explanation-3: -The function of the phloem tissue is to transport food nutrients such as sucrose and amino acids from the leaves and to all other cells of the plant, this is called translocation.

Detailed explanation-4: -seeds <br> After fertilisation, the zygote develops into the embryo and the ovules develop into the seed. The ovary develops into the fruit which develops a thick, protective wall called pericarp.