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frez [133]
3 years ago
14

The cells of organisms found in the phylum porifera (sponges) are not organized into tissues. What structures are absent in orga

nisms belonging to the phylum porifera?
Biology
1 answer:
Shalnov [3]3 years ago
3 0

Members of phylum Porifera are commonly known as spongs. They are generally marine and mostly asymmetrical animals. These are primitive multicellular animals and have cellular level of organization (lacks tissues). These Organisms (belonging to phylum Porifera) lacks most of the structures that are present in multicellular organisms like digestive system, respiratory system, Brain etc

Body of Spongs are made up of spicules or spongin fibers and these organism contain a water canal system which helps them in digestion, reproduction and catching their food in marine habitat.

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An individual's ability to remember the day he or she first swan the length of a swimming pool is most clearly an example of ___
bulgar [2K]

Answer:

Episodic.

Explanation:

Memory is the ability of the brain that sores any information or the data that can be retrieve and stored whenever require. Memory involves the retention information or an individual's character or any event.

Episodic memory may be defined as the memory of the autobiographic events. This memory mainly relates the emotion, location and time. The first swam of the swimming pool is considered as the episodic memory as it memorize the location.

Thus, the answer is episodic.

7 0
3 years ago
All living things have DNA in their cells, but not all living things have ribosomes.
Jobisdone [24]

Answer:

False

Explanation:

All living things need ribosomes, they are the ones that do the translation of the RNA to form proteins which are essential for the cell to live and to reproduce. Without them the cell will accumulate damage and die in a short period of time due to the fact that it lacks proteins that can act as enzymes, carriers, support of a structure, messengers, etc. In other words, Proteins are of vital importance for the cell and if there is no ribosome that can join the amino acids according to the mRNA sequence there will not be proteins.

3 0
2 years ago
Read 2 more answers
How is the DNA in a prokaryote different form the DNA in a eukaryote
rewona [7]
Eukaryotes have their DNA inside a nucleus while Prokaryotes just have it floating inside themselves
3 0
3 years ago
A farmer is trying to determine why some weeds sprayed with weed killer do not die.
Zarrin [17]
Yes, you're correct, it's the first one. He should do research before he does an experiment, because someone else may already know.
7 0
3 years ago
Read 2 more answers
Multicellular organisms are made up of different types of differentiated cells. Given that all cells in an organism
andrew11 [14]

Answer:

There are histones in the nucleus that DNA coils around. The part of the DNA that is coiled around the histones is not accessible, and cannot be expressed in that cell. DNA that is not wrapped around a histone can be transcribed.

Explanation:

6 0
3 years ago
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