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2 years ago

Plants that lose their leaves in the cooler seasons are A) coniferous. B) deciduous. C) non-vascular. D) vascular.

Biology

2 answers:

konstantin123 [22]2 years ago

7 0

Answer: the correct answer is B. Deciduous.

The trees of the deciduous forests are specially adapted according to the seasons and the leaves change and respond accordingly. The trees lose the leaves in the late fall and winter season. The leaves grow back and photosynthesize during summers and spring. During the fall the length of the days get shorter and leaves turn yellow, red or orange and the chlorophyll breaks down the leaves when temperature decreases. In winter the leaves fall down and the plants or trees go to a dormant stage. The leaves by falling protect the trees or plants from the freezing temperature.

Vladimir [108]2 years ago

3 0

The answer is b deciduous

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How are gymnosperm seeds and angiosperm seeds different?

Novay_Z [31]

Answer:

angiosperms have seeds that are closed within an ovary, gymnosperms have no flowers or fruits, and have unenclosed seeds on the surface of scales or leaves

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2 years ago

To test for protein, you added Biuret solution and

OLEGan [10]

Answer:

Water sample showing pink/purple color is an error.

Explanation:

Biuret is a blue color reagent that changes its color to pink/purple whenever it detects protein in a sample. Water don't contain proteins so it should not show pink/purple color instead it should maintain the blue color. Food items generally contain proteins so it show pink/purple color but it showed blue color.

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7 0

3 years ago

Read 2 more answers

During respiration, members of the animal kingdom use ______ and then release ______ as a waste gas.

eduard

Oxygen; carbon dioxide

8 0

3 years ago

You have a 15kb plasmid. EcoRI cuts the plasmid into 7kb and 8kb pieces, and BamHI cuts the plasmid into 1kb and 14kb pieces. If

Harman [31]

Answer:

a. Bands at 1kb, 6kb and 8kb

Explanation:

The EcoRI and BamHI are the restriction enzymes which cut the DNA sequence especially a plasmid at specific sites called the restriction sites.

The restriction enzymes produces bands of specific length therefore these restriction enzymes are used to estimate the approximate length of the DNA.

In the given question, the

1. EcoRI- produces two strands of 7 kb and 8 kb

2. BamHI- produces two strands of 1kb and 14kb

This shows that the length of DNA sequence is 15kb

But when the DNA strand are digested with both the enzymes simultaneously then it will produce three bands as:

i) 14 kb can be broken down in 2 bands of 6 kb and 8 kb

ii) 1 kb band is already produced by the Bam HI.

This shows that 1+6+8= 15 kb

Thus, Option-A is correct.

5 0

2 years ago

13)

Julli [10]

Multiply 5730 years by 2 since two half-lives have gone by for carbon.

<u>Explanation</u>:

The half-life of a radioactive isotope depicts the measure of time that it takes half of the isotope in an example decay. On account of radiocarbon dating, the half-existence of carbon 14 is 5,730 years

The half-life of carbon-14 is 5730 years.

In this manner, after

1 half-life there is 50 % = 1/2 of the first amount left.

2 half-lives there is 25 % = 1/4 of the first amount left.

25% is two half-lives.

Every 50% of life requires 5730 years.

So two half-lives require 2 × 5730

6 0

3 years ago