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Ray Of Light [21]
2 years ago
13

Help!!!!!!!!!!!!!!!!!!!!!!!!!!

Biology
1 answer:
pochemuha2 years ago
3 0
Objects with like charges repel/repulse each other while opposite charges attract each other
The direction of an electric fields is alway the direction electrons would naturally move.
Not sure about the last one, my gut instinct is opposite.
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The only phylum in the group Parazoans is ________. A. Porifera B. Cnidaria C. Lophotrochozoa D. Ctenophora E. Ecdysozoa
ludmilkaskok [199]

Answer:

A. Porifera

Explanation:

Parazoan is a sub-kingdom of animal consisting only of the phylum of sponges (porifera), having two tissue layers only and lacking a nervous system and true digestive cavity.

They have certain characteristics like: sponges are marine, but there are some freshwater sponges that enjoy their water without salt. Most sponges do not have any type of symmetry, but some are radially symmetrical and they come in a variety of shapes, colors, and sizes, they are multicellular, heterotrophic and lack cell walls. Unlike other organisms, sponges lack true tissues and organs.

The mesohyl functions as an endoskeleton in most sponges, and is the only skeleton in soft sponges. This mesohyl is stiffened by mineral spicules, by spongin fibers or both.

7 0
2 years ago
Soil reaction is _______. a. the measure of the acidity or alkalinity of soil b. the highest amount of cations soil can absorb c
VikaD [51]
I believe that the answer is A, if I am not mistaken!
4 0
3 years ago
Read 2 more answers
The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of
Marina CMI [18]

Answer:

The correct answer is option D. True tissues.

Explanation:

The cell that made sponge does not form the tissue however sponge have cells that play important role and specific for specific function but does not have true tissues.

In other animal phyla cells form tissue or organ or organ systems and called as true tissues.

Thus, the correct answer is option D. True tissues.

4 0
3 years ago
What are chemical properties
Alekssandra [29.7K]

Answer:

C. Properties that can change the chemical nature of matter.

Explanation:

Chemical properties is a characteristic of a chemical substance observed when it undergoes a chemical reaction on seeing its precipitation. On knowing the chemical properties of a substance it aids in separation, purification and classification of a compound. some examples of chemical properties are as follows:

1. Toxicity

2. Inflammability

3. Reaction with other chemicals

4. Oxidation

7 0
3 years ago
3. In guinea pigs, black fur is dominant (B) while white is recessive (b). Rough fur is dominant (R
Andre45 [30]

Answer:

You will need to draw a punnett square to determine the exact genotype and ratio. Black smooth fur would be of the genotype BB/Bb and rr genotype.

Explanation:

4 0
3 years ago
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