Which of the following rays/waves are used to know the growth of fetus in the womb?
Detailed Explanation:
Ultrasonic waves (high-frequency sound waves above 20 kHz) are used in ultrasound imaging to monitor fetal growth in the womb. These waves are safe, non-invasive, and produce real-time images by reflecting off tissues.
X-rays involve ionizing radiation harmful to the fetus, microwaves are used in communication/heating, and ultraviolet rays cause skin damage—none are suitable for prenatal imaging.
Therefore, Ultrasonic waves are used for fetal imaging, making Option 3 the correct answer.
Question 2 of 2 Reproductive System
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In which organisms does spore formation occur as a mode of reproduction?
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