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gtnhenbr [62]
3 years ago
8

Some invertebrates combine morphological simplicity with features of great structural or biochemical complexity. Select all corr

ect examples of this statement.
- Trematodes are acoelomates that have effective defenses against attack by their hosts' immune system.
- Sponges lack true tissues but have more variation in cell type than animals in any other phylum.
- Cnidarians are diploblasts that produce complex, capsule-like organelles.
Biology
1 answer:
Vlad [161]3 years ago
8 0

Answer:

The correct answer is -Sponges lack true tissue but have morevariation in cell type than animas in oter phylum.

Explanation:

Sponges are belong under phylum porifera which have diverse form encrusting sheets to volcano shaped mounds.

The tubes that contain in their body are differ in size from millimeter upto one meter.

The poriferans contain canal system and with help of this, they pump water which enters through a specialed pores called ostia that flows through canal called spongocoel and finally the water exits from their body through oscula.

The sponges show complex organization as their body contain single tube with 2 cell layer thick.

Ascon,leucon,sycons are the level of complexity.

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There is good evidence in some species that testosterone does not masculinize the brain directly, that it is first converted to
Gekata [30.6K]

Answer:

The correct answer will be- Aromatization hypothesis

Explanation:

Traditionally it was believed that giving testosterone to the human makes the brain masculine and its effect depends on the estrogen receptors.

The testosterone hormone (androgen) produced from the testis enters the brain which there gets converted to  17-β estradiol (E2) by aromatase enzyme which acts on the estrogen receptors and develops the rodent brain.

Since the pathway involves the enzyme aromatase, therefore, aromatization hypothesis is the correct answer.

5 0
3 years ago
The cell spends 90 percent of its time performing "everyday" functions, growing and preparing to divide during
Mrrafil [7]

Answer:

interphase

Explanation:

Interphase is the most important phase of cell life cycle where it spends 90 percent its time in regulating the metabolic activities of the cell. In this phase cell undergoes several metabolic activities to maintain the growth of the cell.

There are three phases in interphase G1, S and G2. During this phase cell undergoes several changes that include  cell grows, DNA replicates and prepare itself for mitosis.

Hence, the answer is "interphase".

8 0
3 years ago
What is required before a hypothesis advances to the status of a scientific theory ?
Vesna [10]
<span>The hypothesis has to survive all attacks on it and continue to provide the best known explanation of the known data. In the scientific method, there are several steps towards the creation of a hypothesis and eventually a theory.
 1. Gather data. 
 2. Construct a hypothesis that explains the data. This hypothesis should be capable of being disproved and should be capable of making predictions.
 3. Gather more data. DO NOT cherry pick only that data which supports the hypothesis . If data is uncovered that contradicts the hypothesis , revise or replace the hypothesis.
 4. After the hypothesis has survived all attacks on it and is the best known explanation of the data, then it becomes a theory.
 5. Note, data collection continues after the hypothesis became a theory and if new data is discovered that is in conflict with the theory, then the theory is modified, or discarded in favor of a new hypothesis or theory.</span>
5 0
3 years ago
Answer Honestly. 90 points and brainiest if you get it right. Please help ASAP!!!
docker41 [41]

Answer:

A=4

B=1

C=3

D=2

Explanation:

hope this helps you to understand now :)

4 0
2 years ago
Explain how density dependents factors vs density independent factors affect population size.
monitta

Density-dependent regulation can be affected by factors that affect birth and death rates such as competition and predation. Density-independent regulation can be affected by factors that affect birth and death rates such as abiotic factors and environmental factors, i.e. severe weather and conditions such as fire

4 0
3 years ago
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