Chemistry Middle School

Which type of gymnosperm has the least amount of species diversity on Earth today?

cycad
ginkgo
gnetophyte
conifer

Answers

Answer 1
Answer
Ginkgo


Expiation
I took the test on edge

Brainlist pls
Answer 2
Ginkgo is the type of gymnosperm that has the least amount of species diversity on Earth today. There is only one living species of Ginkgo, known as Ginkgo biloba, which is native to China and is commonly grown as an ornamental tree in many parts of the world. In contrast, there are over 600 species of conifers, which are the most diverse group of gymnosperms. Cycads and gnetophytes are also relatively diverse, with around 300 species of cycads and around 70 species of gnetophytes.

Related Questions

A company sells a natural medicine with plant ingredients to help treat dementia, a disease in which people have a hard time remembering things.

The natural ingredients in the medicine are most likely from which type of plant?

gnetophyte
conifer
ginkgo
cycad

Answers

Answer:

The natural ingredients in medicine are most likely from a variety of plants, including but not limited to gnetophytes, conifers, ginkgo, and cycads. However, the specific plants used for medicinal purposes depend on the type of medicine and its intended effects. For example, aspirin, a widely used pain reliever, is derived from the bark of the willow tree (Salix spp.), while the cancer drug Taxol is extracted from the bark of the Pacific yew tree (Taxus brevifolia). So, it's not possible to narrow it down to a single type of plant.

Explanation

I believe the answer is ginkgo 100%

Brainlist pls

Female cones produce ....., which contain an egg.

Answers

I am so sorry if i’m wrong but I believe it’s ovules again so sorry if i’m wrong!
Male cones give rise to microspores, which produce pollen grains, while female cones give rise to megaspores, which produce ovules.

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are liquid at room temperature. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

Answers

Answer:

Different.

Explanation:

If you look at the bottom you can see that the bonds are in different cohesions and the molecules have a quad bond and not a tri bond. Atoms defuse ( the process in this photo is diffusion) and the smell, color, and temperature will change.

People falling down a cliff is potential energy or kinetic energy?

Answers

When people are on the cliff it’s potential because they’re not moving. I want to falling down the cliff it’s kinetic.
When the people are on the cliff and not in motion that's potential energy. When their moving and/or actively falling off the cliff, that's kinetic.

Can someone please put these atoms from most reactive to least reactive? Thank You!
1. Silicon
2. Magnesium
3. Sodium
4. Argon

Answers

Argon is the least reactive because it is a noble gas. Sodium is more reactive than magnesium. Silicon is not very reactive but Argon is least. So Argon is the least, silicon is next, magnesium, and sodium is the most reactive.
4. argon
3. sodium
2. magnesium
1. silicon

Jean listed the steps involved in the life cycle of a gymnosperm.

1 - The pollen gets stuck in a sticky liquid.
2 - Sperm from the pollen fertilize the egg in the ovule.
3 - The ovule develops into a seed.
4 - When mature, the seeds are dispersed.

Which step is missing?

Before step 3, the ovule develops cones.
Just after step 3, the ovule develops cones.
Before step 1, wind carries pollen from the male to the female cones.
Just after step 1, wind carries pollen from the male to the female cones.

Answers

Answer:

I don't believe there is a missing step in the listed sequence provided by Jean. However, it’s worth noting that gymnosperms typically produce cones (also called strobili) that contain the reproductive structures, rather than the ovules developing into cones. The cones can be either male or female and are responsible for the production and dispersal of pollen or seeds, depending on the species. Therefore, the development of cones should be included in the life cycle of a gymnosperm, but it does not necessarily occur just before or after a specific step in the sequence listed by Jean.

Hope I could help.


The missing step is Before step 1, wind carries pollen from the male to the female cones.

The life cycle of a gymnosperm begins with the production of pollen in male cones. The pollen is then carried by the wind to female cones, where it fertilizes the ovules. The ovules then develop into seeds, which are dispersed by the wind or animals.

The correct order of the steps is:

Wind carries pollen from the male to the female cones.
The pollen gets stuck in a sticky liquid.
Sperm from the pollen fertilize the egg in the ovule.
The ovule develops into a seed.
When mature, the seeds are dispersed.
So the answer is Before step 1, wind carries pollen from the male to the female cones.

Which material should the engineer choose if he wants the filling design to be durable and attach to the natural tooth?
A. composite
B. silver
C. gold
D. porcelain

Answers

A. Composite is the material that the engineer should choose if he wants the filling design to be durable and attach to the natural tooth. Composite is a tooth-colored material made of plastic and glass that is used to fill cavities and repair other dental damage. It is a durable and strong material that can bond well with the natural tooth, providing a natural appearance and long-lasting results. Silver, gold, and porcelain are also commonly used dental filling materials, but they may not bond as well to the natural tooth or offer the same level of durability and strength as composite.

The answer is composite A
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