OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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production of memory cells.
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release of immune cells through a circulatory system.
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use of an epidermal layer to inhibit the invasion of pathogens.
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production of salicylic acid to warn cells of an invading pathogen.
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Detailed explanation-1: -Both plants and animals are endowed with a conserved innate immune system able to neutralize pathogens and to contain the infection. It uses specialized receptors to detect microbial patterns, pathogen-derived compounds, and danger signals and elicits an adapted response.
Detailed explanation-2: -Common defense mechanisms include claws, teeth, camouflage, poison, mimicry, and adaptations like echolocation. Some are less common but very effective.
Detailed explanation-3: -Hard-wired resistance The other main difference between plant and animal immunity is that while animals exposed to infection can adapt and acquire immunity, plants cannot. Instead, their ability to recognise and repel specific attackers is hard-wired into their genes.