Biology
The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow:
(i) Identify the system.
(ii) Label the parts marked 2 and 4. Mention the function of part 5.
(iii) Name the structural and functional units of the part marked 1.
(iv) What is the fluid that accumulates in part 3? Which is the main nitrogenous waste present in it?
(v) Draw a neat, labelled diagram showing the longitudinal section of part 1.
Answer
(i) The diagram represents the Urinary/Excretory system.
(ii) The parts marked 2 and 4 are:
- 2 → Ureter
- 4 → Sphincter muscle
Part 5 is urethra. It's function is to expel urine outside the body from the urinary bladder at the time of urination (micturition)
(iii) The structural and functional units of kidneys are nephrons.
(iv) Fluid that accumulates is Urine. The main nitrogenous waste present in it is Urea.
(v) Below is the labelled diagram showing the longitudinal section of part 1 i.e., Kidneys:
Related Questions
State the main functions of the following :
(i) Medulla Oblongata
(ii) Cytokinins
(iii) Tears
(iv) Coronary Artery
(v) Seminal Vesicles
The diagram given below represents an endocrine gland in the human body. Study the diagram and answer the following questions :
(i) Identify the endocrine gland. Where is it located?
(ii) Why is the above gland referred to as the 'Master gland'?
(iii) Name the hormone which in deficiency causes Diabetes Insipidus. How does this disorder differ from Diabetes Mellitus ?
(iv) Explain the term 'Hormone'. What is the role of Tropic hormones in the human body?
(v) Which lobe of the above gland secretes:
- Oxytocin
- ACTH
- Growth hormone
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
(i) Name the factor studied in this experiment.
(ii) What will you observe in the experimental leaf after the starch test?
(iii) Explain the process of Photosynthesis.
(iv) Give a balanced chemical equation to represent the process of photosynthesis.
(v) Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
Given alongside is an apparatus which was set up to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow :
(i) Name the process being studied. Define the process.
(ii) Why was the pot enclosed in a rubber sheet?
(iii) Mention two external factors which can accelerate the above process.
(iv) List two adaptations in plants to reduce the above process.
(v) Draw a neat, labelled diagram of a stomatal apparatus.