Answer:
1. The reproductive parts of angiosperms are located within the flower called the stamen and pistill
and the female part is called Pistil and The male part is Stamen.
2. In angiosperms, pollen produces male cells. Pollen sticks to the female stigma and travels down the style to the ovary. This is where fusion of pollen and ovule will occur to make seeds.
3. The reproductive parts of plants are part of the shoot system.
4. Plant growth and development is regulated by harmone which send chemical messages.
Explanation:
Flowers are the reproductive part of the plant which produces seeds. In flowers, male organ is called stamen and female organ is called pistill or carpals. Stamen has two parts i. e. anther and filament. Pistill has three parts i. e. stigma, style and ovary. Anther contains pollen which fall on stigma and make a tube which goes towards ovary where ovules are present. When pollens fuse with ovules, forming a seed which is a baby plant.
Answer:
Egg is HYPERTONIC
Water in the bowl is HYPOTONIC
The egg will become filled with water over time
Explanation:
Tonicity refers to the ability of an extracellular solution to direct the flow of a solvent (water) in and out a cell. There are three types of tonicity; hypertonic, hypotonic and isotonic. A solution is said to be HYPERTONIC when the concentration of solute in it is higher than its external solution. This is the case of the egg cell that contains 7% salt (solute).
A HYPOTONIC solution is that which contains a lower solute concentration than it's external solution. This is the case of the water in the bowl that contains 3% salt concentration.
Tonicity determines which direction osmosis occurs. Osmosis is the movement of solvent/water from a region of high solvent concentration/low solute to a region of low solvent concentration/high solute concentration via a semi-permeable membrane. In this case, water (solvent) will move through the egg cell membrane (semi-permeable membrane) from the bowl with a low solute concentration into the egg with a high solute concentration. Hence, over time, the egg cell will be filled with water.
According to Jesse Kroll, an MIT professor of chemical engineering and civil engineering who specializes in atmospheric composition, the primary method used by scientists to quantify greenhouse gases in the atmosphere is spectroscopy. Thus, option A is correct.
<h3>What is the amount of carbon dioxide in the atmosphere?</h3>
Only 0.04% of the atmosphere is made up of carbon dioxide, and water vapor levels can range from 0% to 4%. However, while being the main greenhouse gas in our atmosphere, water vapor possesses “windows” that let some infrared light pass through without being absorbed.
Therefore, find a location outside with pure, unpolluted air, then use a special kind of flask to collect an air sample.
Learn more about atmosphere here:
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Answer: nucleus
Explanation: The nucleus contains the DNA which is a genetic material that contains all the instructions for protein synthesis. Before proteins are produced, the DNA is first of all copied into an single stranded RNA in a process known as transcription. This process takes place in the nucleus. The single stranded RNA then leaves the nucleus to the ribosome where protein synthesis takes place, there the RNA is translated into a polypeptide chain.
Answer:
B. Fragments of Rock are squeezed and cemented together.
