Answer:
Goblet Cells
Explanation:
HCL in the lumen doesn't digest the mucous because goblet cells in the mucous secrete large quantities of protective mucus that line the mucous surface.
In simple terms, our stomach has enzymes which allow it to be protected against the hydrochloride acid.
Answer:
Gymnosperms and lower vascular plants have sieve cells as their sieve elements, while sieve tubes are characteristic of flowering plants angiosperms. In gymnosperms, typical companion cells are lacking in the phloem. In gymnosperms, generally the xylem contains only tracheids. Vessels are absent.
Explanation:
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Ventilation is the process which the air moves in and out of the lungs. Diffusion is the movement of gases without the use of energy and or effort by the body. Hope this helps!:)
Answer:
The correct answer will be options 2 and 4.
Explanation:
Classification is a taxonomical system of identification, nomenclature and arrangement of the unidentified organism in taxonomical categories based on the similarity of the characters.
This method is used in the identification of new species by comparing the characters with other identified species based on the similarities which are then arranged into taxonomical categories and nomenclature method is performed thereafter to name the unidentified organism.
Thus, options 2 and 4 which include identification and nomenclature are the correct options.
