Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs, and have no body symmetry.
The shapes of their bodies are adapted for maximal efficiency of water
flow through the central cavity, where it deposits nutrients, and leaves
through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are sessile
aquatic animals. Although there are freshwater species, the great
majority are marine (salt water) species, ranging from tidal zones to
depths exceeding 8,800 m (5.5 mi).
Answer:
Different numbers of neutrons
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What is the topic? what is this question?
1. It is passed from the parents to the offspring.
2. Genes that determine each trait are located in chromosomes and are passed from parents to their offspring during reproduction.
3. genes
4. Height in a human being is determined by the sets of chromosomes found on genes obtained from each parent.
5. It creates new daughter cells to replace parent cells
15. 19 chromosomes
It is referred to as a selective semipermeable membrane because it only allows certain things through, due to the size and shape of whatever is trying to get through.
