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4 years ago

Please help!!!

Biology

1 answer:

Dafna11 [192]4 years ago

5 0

Answer:

To demonstrate osmosis

Explanation:

Put 350cm3 of distilled water into the beaker.
Dip the visking tubing in water to moisten it. fill half the visking tubing with provided sugar solution and then tie the open end of the tubing.
Immerse the visking tubing into the distilled water in the beaker and suspend it in the solution using the glass rod.
Leave the set up for 30 minutes.
Record your observation.

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25% is the correct answer

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In the diagram below you can see structures that work together to allow flowering plants to reproduce.

mart [117]

Complete question:

Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.

Which answer correctly identifies the function of each structure or group of structures in the reproduction of the plant?

X- pollen production

Y- pollen transfer

Z- production of eggs

X- attraction of pollinators

Y- production of male sex cells

Z- egg production

X- production of eggs

Y- pollen transfer

Z- pollen production

X- production of eggs

Y- pollen production

Z- pollen transfer

Answer:

X- attraction of pollinators

Y- production of male sex cells

Z- egg production

Explanation:

Flowers are reproductive structures in charge of sexual reproduction through the production of seeds.

Z, Feminine reproductive structures:

The central structure is known as a carpel, also recognized as the pistil.
The base of the carpel forms the ovary, in which the eggs are produced and where the zygote develops.
The opposite extreme of the carpel is the stigma, in the superior part. The stigma is a sticky surface where the pollen grains get attached.
The ovary and the stigma are connected by a filament named style.

Y, Masculine reproductive structures:

The pollen grains, or male sex cells, are produced in the stamens.
The stamen has an anther where the pollen is produced, and a filament that provides support.

When mature, pollen grains are driven to the stigma of the same flower or other flowers of the species, where they stick. Once in the stigma, the pollen grains move to the ovary, where they meet the egg and fertilize. The zygote develops in the ovary.

X, External non-reproductive structures:

Flowers also have external structures known as petals and sepals. These structures are modified leaves whose principal function is to protect the flower´s fertile parts and attract pollinators. Petals characterize as having many different colors that make the flower more attractive to insects and some animals. When they visit a flower searching for their recompense, the flower´s pollen grains transfer to the insect´s body. The insect transports the pollen to the next visited flower, leaving it in the stigma of the second flower.

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kakasveta [241]

Answer:

Explanation:

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Answer:

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