Home
Class 12
BIOLOGY
When ovule is straight with funiculus, ...

When ovule is straight with funiculus, embryo sac, chalaza and micropyle lying iin a straight vertical line, it is known as

A

orthotropous

B

anatropous

C

campylotropous

D

amphitropous

Text Solution

Verified by Experts

The correct Answer is:
A

Orthotropous or atropous is the erect ovule in which the body of ovule lies straight and upright over the funicle. Hilum, chalaza and micropyle occur on one straight line, e.g. family-Polygonaceae and Piperaceae.
Promotional Banner

Similar Questions

Explore conceptually related problems

Ovule is straight with funiculus, embryo sac, chalaza and micropyle lying on one straight line. It is

When ovule is straight so the funiculus, chalaza and micropyle lie in one vertical line, the ovule is said to be ?

When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be

ovule in which funicle, chalaza and micropyle occur in one vertical plane is

Identify the characters of plant where 8-nucleate embryo sac was first studied by strasburger (a) Micropyle, chalaza and funiculus in same vertical line (b) Both unisexual and bisexual flowers on same plant (c) Filiform apparatus conducts food from endsoperm to egg apparatus (d) Long funiculus coils like watch spring around the ovule.

ldentify the following statements as true (T) or false (F) and select the option accordingy.A. In a pistil, the proximal end of style is attached to the ovary. B. Micropyle, chalaza and funidle in an anatropous ovule are in a straight line. C. Walls of the ovules are called pericarps.

Two balls are projected from points A and B in vertical plane as shown in figure. AB is a straight vertical line. The balls can collide in mid air if v_1//v_2 is equal to

Two balls are projected from points A and B in vertical plane as shown in figure. AB is a straight vertical line. The balls can collide in mid air if v_1//v_2 is equal to

A process where the diploid cell of an ovule outside the embryo sac developing into another embryo sac with reduction is known as

When a body is subjected to a uniform acceleration, it always moves in a straight line. Straight line motion is the natural tendency of the body.