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son4ous [18]
3 years ago
15

What is the first step in the life cycle of a plant that reproduces sexually?

Biology
2 answers:
ad-work [718]3 years ago
7 0

The answer is D: A sperm cell fertilizes an egg cell. I took the test

coldgirl [10]3 years ago
6 0

Answer:

The most appropriate answer would be A sperm cell fertilizes an egg cell.

In sexually reproducing organisms including plants, life starts as a single-celled zygote which is formed by the fertilization of sperm and egg.

The zygote then divides through mitotic division to form an embryo.

After fertilization In angiosperms, the ovule matures to form seed and ovary matures to form fruit.

In gymnosperms, zygote develops into a new sporophyte.

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Transpiration is the evaporation process used by plants for cooling and to regulate the amount of water within its body. Factors
Stella [2.4K]

Answer:

Transpiration is the process of water movement in the plant in which water is released from the leaves to the environment in the form of vapours.

The transpiration is important to the plant as:

1. Cooling Effect: Transpiration help lower down the temperature of the plant by evaporating water.

2. The ascent of Sap: leads to the uptake of water in the plant.

3.  Removal of Excess Water: removes extra water from the plant.

4. Maintain turgidity: helps maintain turgidity which leads to maintains shape and structure.

5. Photosynthesis: supplies water for the photosynthesis.

The process also has disadvantages to the plants as:

1.  Wilting: the excess loss of water causes wilting of leaves during noon.

2. Reduced Yield: the wilting reduces the formation of fruits, flowers and seeds.

3. Wastage of Energy: Loss of water leads to the waste of energy which is used in the conduction of water and absorption.

The climate change has changed the ability of the plants to undergo transpiration and plants has adapted to maintain equilibrium by producing hair, thorns, thick cuticle, sunken stomata, cladodes and phylloclades.

3 0
3 years ago
Determine how to make positive and negative ions. Based on your exploration which subatomic particle is positive? Which subatomi
Katena32 [7]

Answer:

Atoms are electrically neutral as a result of having an equal amount of positive (due to the protons) and negative (due to the electrons) charges on it.

An ion generally is an electrically unbalanced atom (i.e an atom with a net charge on it)

A negative ion called an anion is produced when an atom gains an extra electron from a neighboring atom, giving it an extra negative charge. This can be produced by ionization with a radioactive radiation or simply by dissolution.

A positive ion is called a cation and it is produced when an atom loses electron to a neighboring atom. The loss of this electron causes the positive charges to outweigh the negative charges in the atom. Cations can be produced by radioactive radiation ionization of an atom or by simple dissolution.

The subatomic particle that is negative is the 'electron'.

6 0
3 years ago
Which characteristic differentiates amphibians from reptiles?
iVinArrow [24]

Explanation:

amphibians have smooth, sticky wet and highly porous skin to perform various functions.

reptiles have a dry, hard and scaly skin, which guards them in harsh conditions.

amphibians lay their eggs in water and cover them with gel.

reptiles lay their eggs on land and have a hard protective shell.

4 0
3 years ago
Read 2 more answers
What can you conclude about the susceptibility of the bacteria to the antibiotics?
vova2212 [387]

Susceptibility refers that they can not grow if drug is present . Antibiotic is effective against the bacteria. Resistant means the bacteria can grow even if the drug is present and this sign is an effective antibiotic.

The antibiotic susceptibility testing are based on measuring the inhibition of growth of bacteria. Average time which requires to obtain result are 18- 24 hours for rapid system.Antibiotic sensitivity test can help in finding that which antibiotic is more effective in treating infection accordingly.

Antimicrobial susceptibility test is very significant bacterial isolates and there goal of testing is to detect possible drug resistance in common pathogen to assure susceptibility to drug of choice for particular infections.

To learn more about the Susceptibility here

brainly.com/question/13503518

#SPJ4

3 0
2 years ago
Which factor differences between weather and climate
Ilia_Sergeevich [38]
Weather is the day-to-day state of the atmosphere, and its short-term variation in minutes to weeks. People generally think of weather as the combination of temperature, humidity, precipitation, cloudiness, visibility, and wind. ... Climate is the weather of a place averaged over a period of time, often 30 years.
8 0
3 years ago
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