Question

what did early biologists think sponges were? sponges are in what kingdom and phylum? kingdom____phylum__ are sponges unicellular or multicellular? are sponges prokaryotes or eukaryotes? name the three body layers of sponges. what type of symmetry do sponges have? why are adult sponges said to be sessile animals? what do sponges eat? how do sponges get their food? how does water enter a sponge? what is the job of the amoebocyte? what two substances give the sponge support? tiny sponges growing from the main body of the sponge are called____ what is a gemmule? what is a hermaphrodite? what is the jellylike layer called between the gastrodermis and epidermis? what part of a collar cell helps pull in water? what is another name for collar cells? what level(s) of organization is missing in sponges? name two methods of asexual reproduction in sponges. since sponges are hermaphrodites, do they fertilize their own eggs? when do sponges release gemmules?

Explanation:

Early biologists mis - classified sponges as plants. Sponges belong to the Kingdom Animalia and Phylum Porifera. They are multicellular eukaryotes. Their body has certain characteristics like being asymmetrical, sessile as adults (attached and non - moving), filter - feeding on bacteria, algae and organic matter through pores. Amoebocytes transport nutrients and remove waste. Spicules and spongin give them support. They reproduce asexually by budding and fragmentation and have gemmules as asexual reproductive structures. Collar cells (choanocytes) have flagella to pull in water. They lack tissues and organs. Hermaphroditic sponges generally do not fertilize their own eggs and release gemmules when environmental conditions become unfavorable.

Answer:

What did early biologists think sponges were? Plants
Sponges are in what kingdom and phylum? Kingdom: Animalia, Phylum: Porifera
Are sponges unicellular or multicellular? Multicellular
Are sponges prokaryotes or eukaryotes? Eukaryotes
Name the three body layers of sponges. (Not provided in the answer key in the image)
What type of symmetry do sponges have? Asymmetrical
Why are adult sponges said to be sessile animals? Because they are attached to an area and don't move
What do sponges eat? Bacteria, algae, and organic matter
How do sponges get their food? By filter - feeding through pores
How does water enter a sponge? Through their pores
What is the job of the amoebocyte? Transport nutrients, remove waste
What two substances give the sponge support? Spicules + Spongin
Tiny sponges growing from the main body of the sponge are called? Buds
What is a gemmule? Asexual reproductive structure
What is a hermaphrodite? Organism with male and female systems
What is the jellylike layer called between the gastrodermis and epidermis? Mesohyl
What part of a collar cell helps pull in water? Flagellum
What is another name for collar cells? Choanocytes
What level(s) of organization is missing in sponges? Tissue + organs
Name two methods of asexual reproduction in sponges. Budding + Fragmentation
Since sponges are hermaphrodites, do they fertilize their own eggs? No
When do sponges release gemmules? When environmental conditions become unfavorable