To test for the presence of reducing sugars, a food sample is dissolved in boiling water. Next, a small amount of Benedict's reagent is added and the solution begins to cool. During the next four to 10 minutes, the solution should begin to change colors. If the color changes to blue, then no glucose is present. If a high amount of glucose is present, then the color change will progress to green, yellow, orange, red and then a dark red or brown.
Answer: All cells must show movement
Explanation:
The cell Theory states that:
- The cell is the structural and functional unit of life
- All living organisms are made up of cells
- All cells come from previously existing cells
- There is no life apart from the life of cells
- All living things are either with a single cell (unicellular) or a group of cells (multicellular)
Thus, the statement "All cells must show movement" is not a statement of the cell theory.
Answer:
excretory system
Explanation:
The excretory system is the system of an organism's body that performs the function of excretion, the bodily process of discharging wastes. ... There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system. Every human has two kidneys.
(1) A. (2) D. (3) B. (4) A. (5) B. (6) C. (7) B. (8) B. (9) B. (10) A.
Answer: Option E
Explanation:
Most of all poriferans/ sponges are suspension or filter feeders. Suspension feeders are organisms that each food materials which are suspended in their environment ie sea water, while filter feeders filter their food source from water by drawing water containing bacteria and organic matter in through their ostia(pores). Substrate feeders at organism that live in or on their food source.
Members of the poriferans do hava an ectoderm (epidermis) and an endoderm including a non-cellular late that is present in between the two layers.
No, they do not belong to the phylum cnidaria but porifera. Cnidarians including hydra, sex anemones, jellyfish etc and these have features that different from that of the sponges e.g the presence of nematocysts in cnidarians
Sponges can reproduce both sexually and asexually. Sexually by releasing larva fertilized in the sponge into water where they float around for some days and then proceed to adhere to a solid surface and begin their growth into adults. Asexually by budding
They are multicellular, lack tissues, are animals, lack organs and are asymmetrical. These are th distinguish features of poriferans
