Question

QUESTION 3 

Which of the following statements are true regarding sponges? 

Sponges live in marine or freshwater environments. 

All sponges are photosynthetic. 

Adult sponges are non-motile 

Sponges do not have true tissues. 

QUESTION 4 

Which of the following statements are true regarding arthropods. 

Similar to the earthworm, an arthropod has a body composed of repeated segments 

Arthropods have an exoskeleton 

Arthropods have a coelom 

Arachnids, crustaceans and insects are all arthropods

QUESTION 5 

What are the four basic types of tissues found in animals? 

 tracheid

 muscle tissue

 connective tissue 

 epithelial tissue

 mesophyll

 nerve tissue 

Answer 1

3.Answer is Sponges do not have true tissues

Sponges are the simplest form of multi-cellular animals. They are very diverse and come in a large variety of colours, shapes and structural complexities. They range in heights of 1-200cm and in diameters of 1-150cm. They have partially differentiated tissues, and not true tissues. Sponges don’t have internal organs. They don’t have muscles, a nervous system, or a circulatory system. Their walls are lined with many small pores called ostia that allow water flow into the sponge.  

4. Answer is Arachnids ,Crustaceans,Insects are all Arthropods

An “arthropod” is an invertebrate animal that has an exoskeleton, a segmented body, and jointed appendages. The following families of organisms are all examples of arthropods:

a)Insects such as ants, dragonflies, and bees

b)Arachnids such as spiders and scorpions

c)Myriapods (a term which means “many feet”) such as centipedes and milipedes

d)Crustaceans such as crabs, lobsters, and shrimp

Arthropods have a reduced coelom and an open circulatory system. Arthropods have segmented bodies that enable specialization of body structures such as appendages.

5.epithelial tissue, connective tissue, muscle tissue, nervous tissue.

There are four types of tissues found in animals:epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

Epithelial Tissue- Covers body surfaces and lines body cavities

connective tissue- Binds and Supports body parts

muscle tissue-Enables movement of structures within the body and movement of the entire person / animal

nervous tissue.-Enables responses to stimuli and coordinates bodily functions