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
Nataly [62]
3 years ago
11

Name the main chemical responsible for pollen tube growth

Biology
2 answers:
Sati [7]3 years ago
7 0

Hello~

A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. Pollen tube elongation is an integral stage in the plant life cycle. The pollen tube acts as a conduit to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms. In maize, this single cell can grow longer than 12 inches (30 cm) to traverse the length of the pistil.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

BabaBlast [244]3 years ago
5 0

Answer:

Explanation:

Pollen tubes are produced by the male gametophytes of seed plants. Pollen tubes act as conduits to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms.

You might be interested in
Which term names part of the peripheral nerves system A spinal cord B brain C sensors​
Dimas [21]

Answer:

Spinal cord

Explanation:

The PNS consists of the nerves and ganglia outside the brain and spinal cord.

6 0
2 years ago
Read 2 more answers
Organelles in cells work together to contribute to the function of a cell as a system. Which of the following provides the best
Alex787 [66]

Answer:

I believe the answer is B

Explanation:

Don't quote me

4 0
3 years ago
Read 2 more answers
What is the last phase of the Cell Cycle? (This is when the genetic material has already been duplicated and what is left to do
Marianna [84]

Answer: mitotic phase

Explanation:

The cell cycle has two phases the Interphase and mitosis. Interphase is the growth phase where the cell prepares itself for the cell division. It is divided into three phase G1 phase( Cell growth),S phase ( DNA synthesis) and G2 phase(cell growth).

Mitotic phase has a multiple steps this is where the duplicated chromosomes are aligned or arranged, separated, and move into two new, identical daughter cells(cytokinesis)

The first step in the mitotic phase is called karyokinesis or nuclear division where the chromosomes are separated and move in opposite direction and the second portion of the mitotic phase, called cytokinesis which is the physical separation of the chromatids into the two daughter cells.

7 0
3 years ago
The Himalayas formed when two continental plates collided. what type of boundary is this?
Novosadov [1.4K]
Convergent boundary.
4 0
3 years ago
Which phrase listed below best describes the function of the digestive system?
xz_007 [3.2K]


The best answer is C - to break down food into nutrients.

The digestive system  breaks down food  into its simplest form that cell are able to utilize  for energy.  Food is broken down into its monomer units. Proteins are broken down into amino acids, lipids are broken down into fatty acids and glycerol and carbohydrates are broken down into glucose.

Glucose is then absorbed into the blood and transported to every cell in the body. The cells take in glucose and use it as fuel and raw material  in the process of cellular respiration. From one molecule of glucose, 36 to 38 molecules of ATP ( the form of energy used by cells) are produced.


6 0
3 years ago
Read 2 more answers
Other questions:
  • Explain how the ratio of elements in a compound is related to the compound’s properties.
    14·1 answer
  • Comment on modern method of irrigation​
    5·1 answer
  • Name the type of element that has luster, conducts electricity and is malleable
    8·1 answer
  • A woman creates all her eggs while shes still in the womb
    8·1 answer
  • The size of one copy of the human genome is approximately 3 billion base pairs, and it contains about 25,000 genes organized int
    7·1 answer
  • Diference between aerobic and anaerobic respiration in terms of energy production and location.
    10·1 answer
  • Cell like this has just left the lungs. What colour will it be?
    13·1 answer
  • Cardinals reproduce sexually. Many types of fungi can reproduce asexually by producing spores. A fungus does not need to _______
    12·2 answers
  • Describe the chemistry of two types of enzymes and explain how the apoenzyme forms 200-500 words APA Format​
    10·1 answer
  • If the normal body cells of an organism each contain 36 chromosomes, how many chromosomes would be found in a gamete produced by
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!