When pollen lands on the stigma of a flower, it grows a tube to travel down to the ovary? 1.) True 2.) false

Answers

Answer 1

Answer: The answer is 1.) True.

Pollen tube used to transport pollen from the stigma of a flower to the ovary. Actually, it begins to grow when lands on the stigma. It grows until it reaches an ovule which is inside the ovary. This way it is secured that a nucleus of pollen will fuse with a nucleus of the ovule and that fertilization will occur.

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Unlike carbohydrates and fats, protein contain the element?

How does the muscular system work with the nervous system?

Answers

Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.

both algae and the fungus are benefited from their relationship in a lichen. this relationship is one of

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Answer: The correct answer is- This relationship is one of example of mutualism.

Mutualism can be described as a biological interaction between two species that live in close association with each other in a way that both the partners are benefited from each other. It is a type of symbiotic relationship.

Lichen shows mutualistic relationship between algae and fungus, where photosynthetic algae provides food source to the fungi and fungi in return provides protection to algae as well as provides nutrients from the surrounding.

Thus, it is an example of mutualism.

mutualism. a type of symbiotic relationship.

What structures do microalgae elodea maple leaf and root hair have in common

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Answer:

They have a nucleus, vacuole, cell wall and membrane.

Explanation:

microalgae elodea maple leaf and root hair are eukaryoti organisms and they have nucleus, cell wall and membrane in common and these structures perform different functions.

Nucleus is a membrane bound organelles that contain the DNA or genetic material . It is majorly found in eukaryotic organisms.

Vacuole is a membrane bound organelles that function in digestion, ingestion, excretion of waste and storage.

Cell wall is a structure that give shape, support and protection to cells.

Membrane is a structure that separate the internal of the cell from it outside environment and it give protection to the cell..

Glands in your neck contain digestive enzymes that help digest starch. Cells that produce and package digestive enzymes must contain relatively large amounts of __________ and ____________ in comparison to other cells.. . A). lysosomes; ribosomes. . B). ribosomes; Golgi bodies. . C). mitochondria; ribosomes. . D). Golgi bodies; mitochondria

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The right answer is B). ribosomes; Golgi bodies.

Their function is the synthesis of proteins. Each ribosome consists of 2 subunits. In ribosomes there are two populations by their location, the free ribosome and those that are bound to a membrane system to form rough endoplasmic reticulum. Free ribosomes produce soluble proteins whose activity will take place in the cytosol and the nucleus. The rough endoplasmic reticulum membrane-bound ribosomes synthesize proteins that must leave the cell, such as hormones, but also synthesize proteins for membranes.

The Golgi apparatus: consists of vesicles from the rough endoplasmic reticulum, but without ribosomes (diameter 50 nm). There will be fusion of the vesicles with the dictyosomes or saccules of the Golgi of Cis side Then will advance contents, in particular the proteins on the side Cis towards the side Trans. And finally we will have budding vesicles, some surrounded by a protein structure (clathrin vesicles) on the side Trans.

If the cell must digest and package enzymes for transport, the glands will have more ribosomes and golgi bodies than other types of cells. The answer is B. Mitochondria does not produce or package digestive enzymes, and lysosomes only digest material that is engulfed into the cell.

How do small intestinal epithelial and root hair cells function in nutrient procurement?

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Root hairs allow the plant's roots to cover more ground, thus giving it the Root hairs allow the plant's roots to cover more ground, thus giving it the opportunity to extract more nutrients and water from the soil.small intestine is not flat it has finger like projections called villi which increase absorptive area .

Mendel experimented with garden peas. One of the traits he looked at was texture of the pea coat. If we said the pea coat was smooth what are we looking at?a. genotype
b. phenotype
c. chromosomes
d. alleles

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The answer is b. phenotype.

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Chronic fatigue syndrome results from repeated motions performed in the course of normal work and daily activities. a. True b. False

The region of an enzyme to which a substrate binds is called the

Primary succession ________.a. is caused solely by human events b. occurs on preexisting soil c. occurs in areas without soil d. becomes normalized by climax species