What is not a characteristic that distinguishes gymnosperms and angiosperms from other plants?

The provided question is incomplete as the options are not provided, however the options are as follows:

A.alternation of generations

B ovules

C. integuments

D. pollen

E. dependent gametophytes

The correct answer is - option A. alternation of generation.

Explanation:

Angiosperms and gymnosperms both have alternation gymnosperms however the dominant phase in both are sporophyte. The basic idea of this type of life cycle is stays same.

Plant spores produces the gametes in gametophyte phase of alternation of generation and these gametes form zygote to produce the dominant sporophyte phase of this.

Thus, the correct answer is - a) alternation of generation.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.