2025 ICSE Class 9 Biology Mid-Year Assessment Document: Obtain PDF Version at No Cost
In the realm of knowledge, new discoveries are constantly being made, and it's always fascinating to delve into these findings. Here's a roundup of some interesting facts from various areas of biology and science:
Biology
- The Hilum, a distinct whitish oval scar on the concave side of a seed, is the correct answer to Question 3 in Section A of an unspecified exam.
- Skin pigmentation conditions such as albinism and vitiligo are two abnormal conditions that affect the colour of one's skin.
- The germinative layer of the skin epidermis is where new skin cells are produced.
- Seema's acne problem is related to the sebaceous gland.
- Question 8 in Section A asks about hairs from different parts of the body showing subtle differences. These differences are crucial in forensic investigations.
- The mammary gland, controlled by the hormone prolactin, is responsible for milk production during lactation.
- Question 10 in Section A asks about the lower part of each vertebra. The correct answer is the Centrum.
- Question 12 in Section A discusses vitiligo, a condition where melanin is lost from smaller or larger patches at different regions of the body. This is a recessive trait caused due to inheritance.
- A myelinated neuron is a type of neuron with a fatty sheath called the myelin sheath that insulates the axon and helps to speed up the transmission of electrical signals.
- Two modified sebaceous glands are the mammary glands and the ceruminous glands in the ear canal.
- The micro-organism in the diagram is a protozoan called Amoeba, which is responsible for Riya's amoebic dysentery. Prevention from infection of this micro-organism includes avoiding contaminated water or food.
- The first seven pairs of ribs are called true ribs because they attach directly to the sternum.
Botany
- Two main reasons for gram seeds failing to germinate after being sown deep in the soil could be lack of light and poor soil drainage.
- Some plants show a type of seed germination called epigeal germination, in which the seedlings emerge above ground.
- Bean seeds show hypogeal germination, in which the seedlings emerge below ground.
Anatomy and Physiology
- The number of the tissue in the axial skeleton is 206.
- The principal heat regulating center of our body is the Hypothalamus.
- Ciliated epithelium is found in parts of the human body such as the respiratory and digestive tracts.
- Respiration is a process in which organisms convert energy stored in food molecules into a form that can be used for growth, maintenance, and movement.
- Vasoconstriction is the narrowing of blood vessels due to contraction of the smooth muscle in their walls.
Chemistry
- The function of soda lime in the bottle is to absorb carbon dioxide, and limewater is placed in bottle B to indicate the presence of carbon dioxide.
- Aerobic respiration is a type of cellular respiration that requires oxygen and produces ATP through the complete breakdown of glucose. Anaerobic respiration is a type of cellular respiration that does not require oxygen and produces ATP through the incomplete breakdown of glucose.
Health and Safety
- The cause of Mohan's fever after a hot summer day and journey could be due to dehydration or heat exhaustion. A precaution against this condition is to stay hydrated and rest.
- A natural scavenger that can be dangerous to human life is a rat. Two diseases caused by rats in the human body are rat-bite fever and leptospirosis.
- Two methods to control mosquitoes are using insecticide-treated mosquito nets and eliminating standing water where mosquitoes breed.
Examinations
- The ICSE Class 9 Biology Half Yearly Sample Paper for 2025 is available. The practice paper is designed to resemble the actual exam, including question format and time constraints.
- The ICSE Class 9 Biology Half-Yearly Examination with practical work available was held in the year 2025.
- The figure given below is a kind of animal tissue.
- Question 1 asks for the external surface of bone. The correct answer is the Periosteum.
- Question 5 asks about the activity of the mammary gland and its related reproductive hormone. The correct answer is prolactin.
- Question 6 asks about the end product during anaerobic respiration in plants. The correct answer is ethyl alcohol.
- Question 7 asks which of the following connects a muscle to a bone. The correct answer is a tendon.
- Question 9 asks about the structure that refers to inflammation of the liver. The correct answer is hepatitis.
- Question 13 asks about the structure that refers to inflammation of the liver. The correct answer is hepatitis.
- Question 14 asks about physical exercises and their impact on blood circulation. The correct answer is that physical exercises are necessary for everyone, not just adolescents and adults, and they improve blood circulation.
- Question 15 asks about a parasite which carries germs of plague. The correct answer is the rat flea.
In conclusion, this roundup offers a glimpse into the fascinating world of biology, botany, anatomy, physiology, chemistry, health, safety, and examinations. Whether you're a student, a researcher, or simply a curious mind, there's always something new to learn and discover in these fields.
Read also:
- Conducting Extensive Investigative Work at the Local Level for Political Elections
- Political Divide and the Employment of Technology in Electoral Strategies
- CDU South Thuringia is likely to be designated by Maas
- Application solicitations for PhD in Law at DAU School of Law for the academic year 2025-26 are now open
