It’s b because its shown in the question read it again ,and you’ll see
Answer:
Vector
Explanation:
<u>Diseases can be transmitted by the mechanical or the biological vector. Vector is an animal (typically can be called as an arthropod) which carries disease from one host to another. </u>
Mechanical transmission is the one in which an animal which carries the pathogen from on host body to the another without being infected by it. It is facilitated by the mechanical vector.
Biological transmission is th eone which occurs when pathogen reproduces within the biological vector which transmits pathogen from one host body to the another.
Answer:
★ The answer is B, She is observing a gnetophyte because, unlike other gymnosperms, gnetophytes can have needle-like leaves and deep root systems.
Explanation:
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A-glycogen. In animal cells, when glucose is converted into storage form, it becomes glycogen.
Natural organic compounds produced by plants that are poisonous, particularly to insects, are known as <u>Botanicals</u>.
Botanical insecticides are naturally occurring chemicals (insect toxins) extracted or derived from plants or minerals. They are also called natural insecticides. Organic gardeners will choose these insecticides, in some cases, over synthetic organic materials.
Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, rodenticide, bactericide, insect repellent, fungicide, and lampricide.
Examples of plants that are sources of commercially available botanical pesticides include pyrethrum (Tanacetum cinerariifolium), neem (Azadirachta indica), sabadilla (Schoenocaulon officinale), tobacco (Nicotiana tabacum) and ryania (Ryania speciosa)
To learn more about natural insecticides, here
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