The symbiotic algae found in the secretory cells of Hydra is Euchlorella. This algae forms a mutualistic relationship with the Hydra, providing it with oxygen and nutrients through photosynthesis while receiving protection and access to sunlight in return.
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The cell wall of algae is made of cellulose. Cellulose is a complex carbohydrate that provides structural support and protection for the cells of algae.
The causative agent of mosaic disease in potato is virus. It is specifically caused by the potato virus Y, which leads to symptoms such as mottled leaves, stunted growth, and reduced yield in potato plants.
Foot and mouth disease in animals is caused by a virus. It is a highly contagious viral infection that affects cloven-hoofed animals such as cattle, pigs, sheep, and goats.
Smallpox is caused by a virus. The smallpox virus, known as variola, was responsible for severe illness and high mortality rates. Thanks to global vaccination efforts, smallpox has been eradicated worldwide.
Measles is caused by a virus. The measles virus is highly contagious and spreads through respiratory droplets when an infected person coughs or sneezes. It can lead to serious complications such as pneumonia and encephalitis.
SARS is a viral disease. It stands for Severe Acute Respiratory Syndrome and is caused by the SARS coronavirus (SARS-CoV). It leads to severe respiratory illness with symptoms such as fever, cough, and difficulty breathing.
A virus contains nucleic acid and protein. The nucleic acid, either DNA or RNA, carries the virus’s genetic information. This is encased in a protein coat called a capsid, which protects the genetic material and helps the virus attach to ...
AIDS spreads by physical contact, specifically through direct exchange of bodily fluids such as blood, semen, vaginal fluids, and breast milk. It can also spread through shared needles or from mother to child during childbirth or breastfeeding.
AIDS virus, known as HIV, is a single-stranded RNA virus. It belongs to the retrovirus family and uses reverse transcriptase to convert its RNA into DNA, which integrates into the host’s genome. This integration allows the virus to replicate and ...