StudyWithSmile — free flashcards, quizzes and exam practice for school students
Chemoreception in Organisms
Biology · Kerala SSLC (Class 10) · English Medium · 25 questions and answers
Sample questions
- Q: What is chemoreception?
- A: The detection of chemical substances by receptors. E.g. a target cell detects a hormone through its receptors; ants detect trail pheromones; our taste and smell receptors detect chemicals.
- Q: What are pheromones?
- A: Pheromones are chemical substances released by an animal that affect the behaviour of other members of the same species, e.g. in finding mates or marking trails.
- Q: How do insects such as ants use chemoreception?
- A: Ants release and detect pheromones (chemical trails) to communicate, find food and recognise members of their colony.
- Q: Where are plant hormones produced and how do they reach their target cells?
- A: They are produced at the tips of shoots and roots, in seeds and in sprouting leaves. They reach target cells by cell-to-cell transport or through xylem and phloem, and bind to receptors there.
- Q: What is a target cell? How does a hormone act on it?
- A: A cell on which a particular hormone acts. It has receptors for that hormone; the hormone binds to form a hormone-receptor complex, which controls activities inside the cell.
Sign in free to study all 25 questions with flashcards, quizzes and spaced revision.