Question

Consider the following families.
a. Orchidaceae
b. Potostmaceae
c. Trapaceae
In which of these the endosperm, a nutritive tissue, is NOT formed?

• A. $1$ only
• B. $2$ only
• C. $2$ and $3$
• D. $1,2$ and $3$

Answer 1

The correct option is A $1$ only

The correct answer is A.

Orchidaceae lack endosperm,they form a symbiotic relationships with various mycorrhizal basidiomycetes fungi that provide them the necessary nutrients to germinate.As the chance for a seed to meet a suitable fungus is very small,only a minute fraction of all the seeds released, grow into adult plants