Download App

Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants3 Marks
Question
Explain three outbreeding devices.
✓

Answer

  1. Unisexuality: Male and female flowers are present on different plants.
  2. Dichogamy: The condition in which the stamens and stigma of a bisexual flower mature at different times.
  3. Protandry: This is the condition where anthers mature earlier than the stigma and release pollens.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail." from Sexual Reproduction in Flowering Plants→Sexual Reproduction in Flowering Plants — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

What are the various routes by which transmission of human immunodeficiency virus takes place?
→
Complete the table based on types of solution.

 

Type

Solution

Solvent

OSMOTIC CONCENTRATION

1.

Hypotonic

_____

_____

Low

2.

Hypertonic

_____

_____

High

→
Draw a labelled diagram of the embryonic stage that gets implanted in the human uterus. State the functions of the two parts labelled.
→
Write a short note on Adaptations of desert animals.
→
(a) Name the reaction shown in the given diagram. (b) What are the three steps in this reaction?
→
What are Cry proteins? Name an organism that produce it. How has man exploited this protein to his benefit?
→
Name the foetal membrane that provides a fluid medium to the developing embryo. Mention its two functions.
→
Classify the following contraceptive measures into different methods of birth control.
  1. Saheli.
  2. Tubectomy.
  3. Vasectomy.
  4. Condoms.
  5. Diaphragms.
  6. Cervical caps.
→
An adult patient suffers from low heart rate, low metabolic rate and low body temperature. He also lacks alertness, intelligence and initiative. What can be this disease? What can be its cause and cure ?
→
Give scientific Reson
Left ventricle is thick than all other chambers of heart.
OR
Left ventricle has thicker wall than the right ventricle.
→