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Roman55 [17]
3 years ago
6

Vascular plants first developed on Earth during the _______ period.

Biology
2 answers:
loris [4]3 years ago
7 0

Answer:

b

Explanation:

The first land plants appeared around 470 million years ago, during the Ordovician period

lakkis [162]3 years ago
5 0

Answer:

The answer is "B"

Explanation:

I took a test :)

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1. Consider two clear species as defined by the Biological Species Concept: a. Fertile hybrids can be quite common if they are s
Sedaia [141]

Answer:

The correct answer is option d. "All of the above".

Explanation:

A species is defined as a group of similar living organisms, constituting the basic unit of taxonomic rank of an organism. In Biology an hybrid is considered a species. It doesn't matter if the hybrid comes from combining the qualities of two organisms of different breeds, varieties or species Infertile hybrids such as mules and ligers are considered species as well.

3 0
3 years ago
Plants don't grow as well when ____ has been lost
brilliants [131]
Turgor pressure, because the plant cells will not be able to grow and the plant will wilt.
6 0
3 years ago
47. Find the mismatched pair: A)Facilitated diffusion Extrusion of ions or small molecule with expense of Ar B) Uniport-A single
andrew-mc [135]

Answer:

Option (A).

Explanation:

Facilitated diffusion may be defined as the process of  movement of the particles from the region of higher concentration towards the region of lower concentration with the help of specific integral transmembrane protein.

Facilitated diffusion is a type of passive diffusion and solute particle down the concentration gradient. So this process doesn't require an ATP or any other energy source.

Thus, the mismatched pair is option (A).

4 0
3 years ago
Differential survival and reproduction of individuals in response to environmental pressure that leads to changes in allele freq
Ivahew [28]

Answer:

The answer is natural selection.

Explanation:

Natural selection will make an organism to survive and reproduce because, it will be better suited to the environment.

This is the reason why natural selection is considered as a key mechanism of the evolution.

5 0
3 years ago
List three pieces of evidence for Pangaea.
kari74 [83]

Answer:The rock formations of eastern North America, Western Europe, and northwestern Africa were later found to have a common origin, and they overlapped in time with the presence of Gondwanaland. Together, these discoveries supported the existence of Pangea.When Rodinia broke up, it split into three pieces: the supercontinent of Proto-Laurasia, the supercontinent of Proto-Gondwana, and the smaller Congo craton. Proto-Laurasia and Proto-Gondwana were separated by the Proto-Tethys Ocean.

Don't take my full word on it, this is what i think

Explanation:

8 0
3 years ago
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