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Katarina [22]
3 years ago
12

What is a cell theory

Biology
2 answers:
vesna_86 [32]3 years ago
5 0
The cell theory states that all living things are made up of cells, cells are the basic unit of structure for all living things, and all cells come from other preexisting cells.
Ber [7]3 years ago
4 0
These are my notes on cell theory

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Conventional wisdom holds that the development of separate species happens quickly, most often when populations become separated
Genrish500 [490]

Answer: D. allopatric; breakdown

Explanation:

Allopatric speciation is a type of speciation whereby individuals of the same biological population becomes separated up to the extent that there will no longer be gene flow between them.

3 0
3 years ago
The mountain ash produces a bright red berry fruit. How has the mountain ash tree evolved in order to allow its seeds to be spre
NeTakaya

Answer:

The correct answer is - B. The seeds are in berries that are eaten by birds and dropped as waste away from the plant.

Explanation:

The mountain ash trees contain red berries fruits that attract birds and other organisms. These birds eat these berries and eat berries and fly over the hills or mountains and after digesting they drop the seeds of these berries with the digestive waste. These berries grow on the mountains far from the original source as birds carry them by flying away after eating.

Thus, the correct answer is option B.

7 0
2 years ago
When bone tissue first evolved in vertebrates, it was found within _____?
Sonbull [250]
Exoskeleton

Exoskeleton is a evolutionary innovation. This is operated by muscles attached to it and acts as an armor. Other than support this is an adaptive mechanism to provide protection against predators. In vertebrates, it is considered as the dermal bone that developed via membranous ossification. Fishes retained their exoskeleton in the form of their scales. However, in some organisms terrestrial evolution allows the loss of exoskeleton and formed a more mobile endoskeleton,
3 0
3 years ago
Define 'ecosystem'. <br>with explanation<br>★★★★★​
TiliK225 [7]
Ecosystem is a community or group of living organisms that live in and interact with each other in a specific environment.

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
4 0
3 years ago
What are the basic units of a chemical element called?
Scilla [17]
Your answer is a , atoms .
8 0
2 years ago
Read 2 more answers
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