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3 years ago

Some flowering plants have a long pistil that reaches way above the lower petals. What’s the purpose of this structure?

Biology

2 answers:

horsena [70]3 years ago

7 0

Answer:

To receive pollen grains

Explanation:

A flower is a modified shoot which is meant for reproduction. The stamen is the male reproductive organ and the pistil is a flower's female organ. A pistil is located in the centre of the flower and is surrounded by petals, sepals and stamens.

Some flowers have a long pistil that reaches above the petals to receive wind disseminated pollen grains. This helps transfer pollen and fertilize the ova in the ovaries.

vichka [17]3 years ago

6 0

SO they can have better access to sunlight and it helps the process of photosynthesis

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Can you complete this concept map that reviews some key ideas about macro evolution

Inessa [10]

Macroevolution can cause significant changes in the frequencies of alleles, that can ultimately result in speciation (forming of new species).
Various large-scale events like climate change and continental drift can greatly influence the distribution of species and adaptive radiation of different groups that can fill vacant ecological niches.
The changes in gene regulation and genetic mutations can also contribute to macroevolution by producing novel traits and adaptations.

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2 years ago

Each of the following processes is associated with one or more specific eukaryotic organelles. In each case, identify the organe

Kisachek [45]

Answer:

Part A It is associated with peroxisomes and mitochondria.

Part B. It is associated with smooth endoplasmatic reticulum.

Explanation:

The oxidation of long chain fatty acids are produced at the beginning in the mitochondria, it is called B oxidation because there is a carbon in this position that in this process is going to be oxidized to a carbonyl group. The very long fatty acid chains are also oxidized in the peroxisomes.

The cholesterol biosynthesis is made inside the hepatic cells, in the endoplasmatic reticulum. Is a process that starts with acetyl Coenzime A that was oxidized in the mitochondria. This process is regulated by the intake of cholesterol from the diet.

Hope this info is useful.

5 0

3 years ago

1. Which layer is the oldest? Which layer is the youngest? How do you know?

Setler79 [48]

Answer:

the youngest layer is 7(middle point) because decomposition must occur in the middle of decomposed materials.the oldest is 12(upper one) because decomposed material are found at the top most of organisms.
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3 years ago

A 76-year-old man is recovering from a myocardial infarction. in regards to his recovery, it is important for the nurse to:

Lena [83]

To give him low cholestrol and low fat diet

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3 years ago

Use the drop-down menus to label the parts of a nucleotide.

murzikaleks [220]

The parts of one nucleotide a nitrogenous bases (labels C and D), a pentose sugar (labels B and E) and phosphate group (labels A and F).

<h3>What is a nucleotide?</h3>

A nucleotide is a building block of nucleic acids (either DNA or RNA) that form the genetic material of an individual.

Phosphate groups form the backbone of the double helix and bind to pentose sugars in adjacent nucleotides.

Nitrogenous bases bind opposite DNA strands by hydrogen bonds, they include Adenine (A), Guanine (G), Cytosine (C) and Thymine (T).

In this case, the labels include:

Label A: phosphate
Label B: deoxyribose sugar
Label C: nitrogenous base
Label D: nitrogenous base
Label E: ribose sugar
Label F: phosphate

In conclusion, the parts of one nucleotide a nitrogenous bases (labels C and D), a pentose sugar (labels B and E) and phosphate group (labels A and F).

Learn more about nucleotides here:

brainly.com/question/1569358

#SPJ1

4 0

1 year ago