Assertion: Pinus embryo has two cotyledons.
Reason: Pinus shows polymbryony.

Embryo with two cotyledons is seen in

Pinus has

Assertion: Pinus shows formation of annual rings. Reason: Pinus grows in area of environmental fluctuation.

How many cotyledons are present in Pinus embryo ?

How many cotyledons are present in Pinus embryo?

Assertion : Bird's embryo shows tooth buds for some time. Reason : Ontogeny repeats phylogeny.

Assertion : Bird's embryo shows tooth buds for some time. Reason : Ontogeny repeats phylogeny.

Assertion: Pinus is monoecious. Reason: Each sporophyll bears only one microsparangia.

Assertion: Pinus has a pyramidal appearance. Reason: The older parts of long shoot have scars of fallen dwarf shoots.