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sladkih [1.3K]
4 years ago
6

The fossil of a plant reveals that it produced spores that were used for reproduction. Which type of plant was it

Biology
1 answer:
natali 33 [55]4 years ago
7 0

Answer;

Seedless plant.


The fossil of a plant reveals that it produced spores that were used for reproduction. It was a seedless plant.


Explanation;

-Seedless vascular plants are plants such as fern and horsetails, liverworts, mosses; which contain vascular tissues, but do not produce flowers or seed.

-These plants reproduce using haploid , unicellular spores instead of seeds.

-These plants have life cycles with two distinct stages; one in which spores are produced and one in which sex cells are produced.

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The atomic mass of an atom is 28 and has 15 neutrons. What is its atomic number? a. 15 c. 13 b. 28 d. 43
kondaur [170]

Answer: Option C) The Atomic number is 13

Explanation:

The number of neutrons + Protrons = Atomic Mass

Thus, 15 + Protrons = 28

Protrons = 28 - 15 = 13

Usually, the number of protons in an atom is always EQUAL to the Atomic number of the atom

Since number of protons is 13, therefore the atomic number of the given atom is 13

8 0
4 years ago
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A microbiologist is conducting a research project on chemolithoautotrophs. This means that the investigator is examining certain
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Answer:

uses light as its energy source and carbon for organic compounds.

Explanation:

The purple non-sulfur bacteria which depends on light produces organic food  just like plants through the process of photosynthesis. The purple non-sulfur bacteria uses carbondioxide and water with sunlight produces oxygen and glucose which is an organic compound. So that's why purple non-sulfur bacteria is also known as phototrophic means organism that produces their own food through photosynthesis.

4 0
3 years ago
Sequence the steps involved in the making of the cast of a shell
Alex787 [66]
1)First, prepares all the necessary equipment and material
<span>2Creating the pattern that desired for the shell</span>
<span>3)Creates the core of the shell by pouring the hollow spaces with meta</span>
<span>4)Creates molds for the shell by filling the corebox with sands and let them combined over time</span>
<span>5)Shake out the sand after the combination already cooled down</span>
<span>6) cast results are finished.</span>
3 0
3 years ago
What's the difference between meiosis and mitosis?​
belka [17]

Explanation:

Comparison of the processes of mitosis and meiosis. Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.

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3 years ago
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Explain how a single fertilised egg cell can devolop into billions of different cells in a human adult
Alex

Answer:

A fertilized egg cell is a single cell that can develop into one or more specific types of cells in the body. These cells include neurons, blood cells, skin cells, muscle cells, and many others. This process involves two major steps: differentiation and specialization.

During differentiation, each of the many types of cells in the body has to be developed separately. For example, skin cells have to differentiate into hair follicles, sweat glands, sebaceous glands, and so on. The developing brain cells must differentiate into a specific set of brain cells (neurons) that make up the cerebral cortex. During specialization, each of these specialized cells becomes specialized for its specific function. For example, skin cells specialize to form keratinocytes, which form the outer layer of our skin. Neurons specialize to make connections with other neurons in the brain. Blood cells specialize to carry oxygen throughout the body.

The process of differentiation and specialization is continuous, as new cells are constantly being created and old ones are constantly dying off. This continuous process of change is what allows the body to grow and develop throughout life.

Explanation:

My own original work.

4 0
2 years ago
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