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joja [24]
4 years ago
10

Sickle-cell anemia is an example of _____.

Biology
1 answer:
Ira Lisetskai [31]4 years ago
7 0

daaddadaaaaaaaaaaaaaaaaaaaaa

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Define three differences between flowers, cones, and spores
stealth61 [152]
Teaching Assistant
Question:

Explain the difference between breeding organs and spores and flowers?

Answer:

Breeding Spores is with natural vegetative, sexual breeding in reproductive organs eg askospora, basidospora, oporpora, sigospora.

Breeding Flowers are generative in seed plants covered with the characteristic appearance of flowers, and reproductive organs with pistils and stamens.

Explanation:

1. Spores

Spores are one or several cells wrapped in a protective layer, in these cells and only grow in an environment that meets the requirements. Spores are cells that change function into breeding tools. Plants that breed with spores include ferns, fungi, algae and feathers, spores are plant leaves on the back in the form of powder and stored in spores called sporangium.

The function of the spore is as a distribution tool similar to seeds, but different in terms of anatomy and evolution.

Breeding spores is divided into two types:

1. breeding of sexual spores is with sexual spores where spores formed in special organs occur from the mixing of two hyphae and this combination will then form a reproductive device that has special features such as the following:

a. Askospora

b. Basidospora

c. Oospora

d. Sigospora


2. Asexual breeding is directly formed by hyphae without going through the incorporation of hyphae, reproductive hyphae. Namely with three types:

a.Talospora namely Talospora, Blastospora, Klamiospora

b. Konidiospora

Formed from the tip of hyphae. Here the protoplasm divides itself. There are 2 kinds of forms: macro- and microconidia.

c. Sporangiospora

Formed from sporangium, which is from the tip of hyphae or special mycelium in the form of lumps, and from these lumps spores are formed.



2 flowers

Parts of interest are:

a. Bungan jewelry, namely flower jewelry, namely petals and flower crowns.

b. The base of the flower is the end of the flower stem that enlarges and becomes the place where the flower crown attaches.

c. Flower stalk. The flower stalk is the part that connects the flower with the stem.

d. Stamens. Stamen is a male genitals for plants. Stamen itself consists of Sari Tangkai and Sari Head,

e. Pistil. Pistil is a female genitalia in plants. The pistil consists of the stalk of the pistil, the head of the pistil and the ovary, and in the ovary there will be seeds.

f. Complete flowers are flowers that have all parts of the flower. Incomplete interest is an interest that does not have one part of interest as described above.

g. Imperfect Flowers are flowers that only have one breeding device. For example flowers that only have stamens and are called male flowers, and flowers that only have a pistil and are called female flowers.

The process of flower reproduction by pollination process is a generative breeding process in plants known as pollination. Pollination is the process of falling pollen on the stigma.

Based on the pollen source pollination can be divided into:

• Self Pollination. Self Pollination is pollination which occurs when the Stamen which falls on the Head of the Pistil comes from the joint itself and of course the one who can do it is the Complete Flower that has the Stamen and Stamen at the same Time.

• Pollination of Neighbors. Neighboring pollination is pollination that occurs when pollen that falls on the stigma comes from other flowers but still on one tree.

• Cross Pollination. Cross Pollination is pollination that occurs when pollen that falls on the stigma comes from other flowers of a similar type but different trees.

• Bastar pollination. Bastar pollination is pollination which occurs when pollen that falls on the stigma comes from other, non-similar flowers.

• Pollination by wind. Flowers that pollinate are helped by the wind.

• Animal pollination. Flowers that pollinate assisted by animals have characteristics such as having large, attractive flower crowns, striking crown colors, distinctive odors and producing nectar which can all attract animals to approach them.

• Pollination by water. Pollination aided by water usually occurs in aquatic plants. This happens because the falling rainwater can hit pollen.

• Human pollination. Plants that process pollination assisted by humans are plants

HOPE USEFUL ^_^
8 0
4 years ago
Explain several ways water is stored during the water cycle.
sergij07 [2.7K]

Answer:

The water cycle

Explanation:

<em>Possible answers include that water is stored as ice and snow on the ground during the water cycle. Water is also stored in clouds until precipitation occurs, which transfers water from the atmosphere to the ground. On the Earth's surface, water can be stored in liquid form in streams, rivers, lakes, and oceans.</em>

7 0
4 years ago
Read 2 more answers
Which of the following statements are true? Check
Akimi4 [234]

Answer:

A copy of DNA is passed on to new offspring.

Replication is the process by which DNA is copied.

Explanation:

During cell division, the DNA molecule in the parent cell must replicate accurately before the cell divides. The two strands are believed to separate. Each strand becomes a template that specifies the base sequence of a new complementary strand. Through the action of replicating enzymes, free nucleotides come and take up positions along the template strands. Covalent bonds are then formed between the new nucleotides resulting in formation of new DNA strand.

6 0
3 years ago
A student wants to cross parent mice to produce offspring with black fur and offspring
topjm [15]

Answer:

Bb and Bb

Explanation:

This is the only combination of the four that will produce both mice with black fur and mice with white fur. Option A will only give black fur, option B will only give white fur, and option C will only give black fur since parent 1 will only give the dominant B allele to the offspring. With Bb and Bb, the genotypes of the resulting offspring could be BB, Bb (which will result in black fur) or bb (which will result in white fur).

5 0
2 years ago
What is the function of the immune system?
Nadusha1986 [10]
- to fight disease-causing germs (pathogens) like bacteria, viruses, parasites or fungi, and to remove them from the body.
- to recognize and neutralize harmful substances from the environment.
- to fight disease-causing changes in the body, such as cancer cells.
8 0
3 years ago
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