What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation to male gametes from pollen grains?

The correct Option is "$2:{\rm{ }}1$"

Which of the following statement is true about the sporophytic stage in plant life cycle?

The plant life cycle has both a sporophyte and a gametophyte generation. The stage of a plant life cycle, that produces spores by meiosis and alternate with the gametophyte stage is called sporophytic stage

Generation that produces the gametes

The correct Option is "Generation that produces the spores"

Generation that produces vascular

In which of the following reactions of glycolysis, oxidation takes place?

In glycolytic pathway, 3PGAL is converted into 1, 3-diphosphoglyceric acid by an oxidation and phosphorylation reaction, which occurs in presence of H$_3$$P{O_4}$ and coenzyme NAD. 3-phosphoglyceraldehyde + $NA{D^ + }$ + $P{i^{ - 2}}$ → 3-phosphoglyceraldehyde dehydrogenase 1, 3-diphosphplyceric acid + NADH +${H^ + }$

Glucose 6-$P{O_4}$ to fructose 6-$P{O_4}$

The correct Option is "Glyceraldehydes 3-phosphate to 1, 3-diphosphoglycerate"

1,3-diphosphoglycerate to 3-phosphoglycerate

2-phosphoglycerate to phosphoglycerate

Chromosomes are arranged along the equator during

In plant cells, during metaphase chromosomes line up around the equator of the spindle and attached by their centromere to the spindle fibres (microtubules). In animal cells, during metaphase, smaller chromosomes are usually central in position with larger ones peripheral in position.

The correct Option is "Metaphase"

In Deuteromycetes, the mycelium is

In Deuteromycetes, the mycelium is septate and branched. Coenocytic forms are not known

The correct Option is "Septate and branched"

In aerobic respiration complete oxidation of pyruvate by the stepwise removal of all the hydrogen atom makes …….. molecule of $C{O_2}$

The aerobic respiration takes place within the mitochondria, the final product of glycolysis pyruvate is transported from the cytoplasm into the mitochondria. The major events in aerobic respiration are The complete oxidation of pyruvate by the stepwise removal of all the hydrogen atoms, leaving 3 molecules of $C{O_2}$. The passing on of the electrons removed as part of the hydrogen atoms to molecular ${O_2}$ with simultaneous synthesis of ATP

A man with normal vision whose father was colourblind marries with women whose father was also colourblind. Suppose their first child is daughter then what are the chances of this child to be colourblind?

Because in sex linked inheritance the chance of girl or female to be affected is almost nill. Generally, the females are carriers and in heterozygous condition

Aggregate fruit formed from

Aggregate fruit is a cluster of several to many ripened ovaries formed from polycarpellary, apocarpous flower (ovary). Each carpel forms a fruitlet

The correct Option is "Multicarpellary apocarpous ovary"

Multicarpellarey syncarpous ovary

Monocarpellary apocarpous ovary

Monocarpellary syncarpous ovary

Development includes (plants) I. Differentiation II. Redifferentiation III. Dedifferentiation Select the right combination from the given option

Development cannot take place without growth, and growth takes place by differentiation, dedifferentiation and redifferentiation. Hence, through these processes development takes place

The correct Option is "I, II and III"

When a tall pea plant (TT) is crossed with dwarf plant (tt) what will be the${{\rm{F}}_2}$-generation?

When a tall pea plant (TT) is crossed with dwarf plant (tt), the ${{\rm{F}}_1}$progeny shows all plants hybrid tall and on selfing of ${{\rm{F}}_1}$progeny, the ${{\rm{F}}_2}$generation shows both tall and dwarf plant in the ratio 3 : 1. Out of three tall plants, one is pure tall (TT) and two are hybrid tall (Tt).