1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tom [10]
3 years ago
7

Do you think that all pollen germinates indiscriminately on all stigmas?

Biology
1 answer:
r-ruslan [8.4K]3 years ago
4 0
Pollen tube growth is one of the most fascinating—and essential—phenomena in the life cycle of flowering plants. After a compatible interaction between pollen grains and the stigma surface, the pollen germinates and forms the pollen tube, which grows through the stigma, style, and transmitting tract to deliver the sperm cells to the ovule." 
2) Although pollens of many species germinate in simple aqueous media, stigmas do not provide satisfactory sites for the germination of most foreign pollen... Stigmas not only provide the proper conditions for the germination of pollen from their particular species, they actively inhibit the germination of pollen of many unrelated species.
You might be interested in
Be aware of mudflows. the danger from a mudflow increases near stream channels and with prolonged heavy rains. mudflows can move
Anettt [7]

The mudflows are very dangerous and they have a great destructive power. They appear after a heavy rainfall on places that are steep. The mudflows are very fast and sudden occurrences, so usually people are caught unprepared. A mudflow is a mixture of water and lot of ground/mud, and all sorts of debris, which also contributes to it to be more dangerous.

8 0
3 years ago
Read 2 more answers
When is your respiration rate likely to change?
Taya2010 [7]

Answer:

I believe the answer is "C. When your cells need more oxygen."

Please mark brainliest, if right. Thanks :)

5 0
2 years ago
Read 2 more answers
When sugar is dissolved in water which is a solute?
fomenos
A solute is the part that gets dissolved in the solvent, so the solute is the sugar
5 0
3 years ago
Read 2 more answers
Need help soon as possible
Sonbull [250]

Answer: Negative

When converting from scientific notation to standard notation if the power of 10 is negative we move the decimal to the left. If it is positive we move the decimal to the right.

Example: 3*10^-3=.03 and 3*10^3=300

7 0
3 years ago
Read 2 more answers
Quick
Viktor [21]

Answer:the organelle which are found in both animal and plant cells are

Cell membrane

Cytoplasm

Nucelus

Golgi bodies

Ribosome and

Vacoule ( in different amount)

3 0
3 years ago
Other questions:
  • The picture below shows the process of transcription. During transcription, enzymes bind to a molecule of DNA. Then, the enzymes
    5·2 answers
  • Which of the following does not accurately describe the forces that exist with an atom?
    9·2 answers
  • Consider the wetland habitat pictured here. Imagine a very hot summer with little rain. What would be the limiting factor for th
    13·2 answers
  • Identify the stage of cellular respiration in which each of the following takes place.​
    5·2 answers
  • Key Concept Check Why is Earth warmer at the equator and<br> colder at the poles?
    13·2 answers
  • A biologist who follows the _________ paradigm assumes that each part of a living organism is an adaptation and that the functio
    9·1 answer
  • Scientists conduct experiments to collect evidence. Which of the following is the best definition of the word experiment as used
    15·1 answer
  • Which statement describes why zebra fish experience similar genetic diseases as<br> humans?
    8·1 answer
  • . Si el átomo contiene electrones que son partículas con carga eléctrica negativa, ¿por qué el átomo no tiene carga
    10·2 answers
  • Can someone help me with the parts k j h l label Please I can’t find it anywhere
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!