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Give five examples of gymnosperms and their geographical locations

nirvana33 [79]

Answer:

conifers, cycads, ginkgoes, Gnetophyte.

Explanation:

Gymnosperm (naked seeds). These type of plants don´t produce fruits nor flowers, the seeds are not contained within an ovary or fruit. The seeds are exposed on the surface of the leave-like structures named bracts, bracts are modified leafs or scales. The seeds of these type of plants are directly fertilized by pollination since they are open to the air.

Some examples are:

Conifers (cedars, douglas first, cypresses, etc), are distributed in most parts of the world, especially in cold areas. They are specially abundant in the boreal forest of the northern atmosphere.

Cycads (genus Cycas, genus Bowenia, genius Dioon, etc) are natives of warm regions the Easter and Western hemisphere. They are well distributed in Africa, Australia, South America. They are prominent different species are found in Central America.

Ginkgo biloba (ginkgo) Is native from China.

Gnetophyte (Ephedra, Gnetum, Welwitschia mirabilis, etc) They are found in dry and cool regions in both hemispheres, western and eastern.

Ephedra is distributed in desert areas in the southwestern United States, and some parts in Mexico and South America.

Welwitschia mirabilis, is found in Namib desert of southwestern Africa.

7 0

3 years ago

Read 2 more answers

8 Natural selection produces changes most quickly in

Olegator [25]

Answer:

Natural selection produces changes most quickly in species with short reproductive cycles.

Explanation:

Natural selection implies a process of changes in the genome of species, induced by their environmental conditions, which allow them to survive. The processes of natural selection usually manifest themselves after long periods of time and are synonymous with adaptive evolution.

Since natural selection depends on the changes observable in successive generations within a species,<u> in organisms with short reproductive cycles the changes promoted by natural selection could be observed most quickly</u>.

Learn more:

Natural selection and evolution brainly.com/question/312738

3 0

4 years ago

Cardiac muscle cells have a tremendous demand for oxygen in order for their mitochondria to break down enough fatty acids and gl

Finger [1]

Cardiac muscle cells get all the oxygen they need from the coronary arteries. They do not gather oxygen from the blood flowing inside them but from the blood as received from the coronary arteries. Hope this answers the question. Have a nice day.

4 0

3 years ago

High-energy electrons are transported from chlorophyll to other molecules in the chloroplast by

nirvana33 [79]

Answer:

The most appropriate answer would be C.electron carriers such as NADP⁺.

High energy electrons are transported through electron transport chain embedded in a thylakoid membrane in order to produce energy rich compounds such as ATP and NADPH.

It is also called as light dependent reaction of photosynthesis. It includes four major protein complexes: photosystem II, photosystem I, cytochrome b6f complex, and ATP synthase.

The electron first gets excited from chlorophyll a present in the reaction center (P₆₈₀ and P₇₀₀) of two photosystems (PS II and PS I) . The electron in PS II is replenished by photolysis of water.

Different electron carriers (such as plastoquinone, plastocyanin, pheophytin, chlorophyll A₀ etc) are present which help in transferring this high energy electron from one complex to another. NADP⁺ is the final acceptor of the electron and gets reduced to NADPH.

NADPH and ATP are then used in dark reaction in order to fix carbon into sugars.

4 0

3 years ago

What do the ecosystems of a puddle, lake, river, jungle, mountain-top grassland, and deep-sea vent have in common?

Wewaii [24]

B. they are defined by their biotic factors and abiotic factors.

4 0

3 years ago