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zhuklara [117]
3 years ago
6

As various vertebrate groups evolved, the structure of the heart changed. Which of the following describes the heartsame of bird

s and mammals?
A) One atrium and one ventricle
B) Two atria and one ventricle
C) One atrium and two ventricles
D) Two atria and two ventricles
Biology
1 answer:
Dahasolnce [82]3 years ago
8 0
Two atria and two ventricles                                
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Compare/Contrast the growth process and life cycleof plants and<br> animals.
Oksana_A [137]

Answer:

Comparison between the growth process and life cycle of plants and animals:

A single cell is enough to initiate life in plants and animals. The cells of both the plants and animals multiply to increase their number. The gametes in animals and the plants that produce flower, shows sexual reproduction and are haploid in nature. The egg and sperm of animal is similar in function with the megaspore and microspore of plants.

Differences between the growth process and life cycle of plants and animals:

The fertilization of plants depends on other animals ( like bees and bird) but the animal fertilization does not depends on other organisms. Well developed parental care is present in animals but absent in plants. The growth of most plants includes the alternation of generation whereas limited animals shows alternation of generation.

4 0
4 years ago
How does a system of non living things operate to meet the needs of living organisms in an ecosystem
timurjin [86]
 living things need non living things to survive. Without food, water, and air, living things die. ... Plants use water from the soil, carbon dioxide from the air, and energy from sunlight to make their own food.
6 0
3 years ago
Which geologic feature results from subduction? O A. Ocean trenches O B. Hot spots C. U-shaped valleys O D. Mid-ocean ridges​
Brilliant_brown [7]

Answer:

A. ocean trenches

Explanation:

I just took that test. Sorry I know I'm late and this won't help.

8 0
2 years ago
Identify the process that is necessary for sexual reproduction. Also, explain why it is necessary and identify how this process
Olenka [21]

Answer:

The correct answer would be meiosis.

In diploid organisms, meiosis is the process that results in the formation of four haploid daughter cells from single diploid parent cell. Each of the daughter cell contains half the number of chromosomes present in parent cell.

It results in the formation of haploid gametes (sperm in males and eggs in females) which is essential in the process of sexual reproduction.

The fusion of gametes results in the formation of diploid zygote that is, maintains the diploid nature of the organism.

Hence, in absence of meiotic division the chromosomal number would keep on doubling after each generation.

In addition, crossing over (exchange of genetic material between non-sister chromatids) also takes in the prophase-I of meiosis I. It increases the genetic variation within organisms of the species. It may add survival adaptations to the population.

5 0
3 years ago
Read 2 more answers
Which process in respiration takes place last
zloy xaker [14]
Answer:
            Electron transport chain is the last step of respiration.

Explanation:
                     Respiration is a cellular process in which glucose molecule is broken down into carbon dioxide, water and ATP is produced as end product. Respiration consists of following main steps:

1. Glycolysis:
                It occurs in the cytoplasm of cell, and each glucose molecule is converted into two pyruvates with help of ATP.

2. Formation of Acetyl coenzyme A:
                                                        It is a connecting link reaction between glycolysis and Kreb cycle. In this phase Each pyruvate react with Coenzyme A to become acetyl coenzyme A.

3. Kreb Cycle:
                   It occurs inside mitochondria. In this cycle each acetyl coenzyme A with fixed with CO to produce citrate which undergo in a cyclic reaction to produce ATP and NADH. . 

4. Electron transport chain:
                                           It is the last step of respiration which complete in mitochondrial membrane. In this phase most of the energy is produced along with H₂O as by product.

Conclusion:
                    It was concluded from the above discussion that the last process that takes place in respiration is electron transport chain.
7 0
3 years ago
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