HOW DO ORGANISMS REPRODUCE: Short Answer Type Questions Class 10th Chapter 10 JKBOSE/NCERT Short Answer Type Questions Question 1. List and explain in brief three methods of contraception. Ans: Three methods of contraception: a) Barrier Methods: Barrier methods of contraception involve the use of physical barriers to prevent sperm from reaching the egg. Examples include […]
Name two unisexual and two bisexual flowers.
Ans: Two examples of unisexual flowers are:
Papaya: It has separate male and female flowers on different plants.
Watermelon: It also has separate male and female flowers on different plants.
Two examples of bisexual flowers are:
Rose: It has both male stamens and female pistils within the same flower.
Sunflower: It also has both male and female reproductive structures within the same flower.
ASSERTION: Gonorrhoea is a sexually transmitted disease.
REASON: It is caused by the virus.
Answer: False
Explanation: The assertion is true, as gonorrhoea is indeed a sexually transmitted disease. However, the reason is incorrect. Gonorrhoea is caused by the bacterium Neisseria gonorrhoeae, not a virus.
Define fruit.
Ans: A fruit is the mature ovary of a flowering plant that typically contains seeds. It develops from the fertilized flower and serves as a means of seed dispersal. Fruits are often sweet or fleshy, but they can also be dry, depending on the type of plant
What is the function of receptors in our body? Think of situations where receptors do not work properly, what problems are likely to arise?
Ans: Receptors in our body are specialized cells or structures that detect and respond to stimuli from the environment or within the body. They play a crucial role in sensory perception and relay information to the nervous system.
When receptors do not work properly, it can lead to various problems depending on the specific receptors affected. Here are a few examples:
A. Loss of vision: Malfunctioning of the photoreceptors in the eyes can lead to visual impairments or blindness.
B. Hearing loss: Dysfunction of the auditory receptors in the inner ear can result in hearing loss or deafness.
C. Reduced sense of touch: Impaired receptors in the skin can diminish the ability to sense temperature, pressure, or pain.
D. Altered taste and smell perception: Dysfunction of taste buds or olfactory receptors can affect the ability to taste or smell properly.
E. Balance and spatial orientation issues: Problems with receptors in the inner ear responsible for detecting motion and maintaining balance can cause dizziness, vertigo, or difficulties with coordination.
In general, when receptors do not work properly, it can disrupt the transmission of sensory information to the brain, leading to sensory deficits, impaired perception, or difficulties in coordinating responses to the environment.
Why is it advisable to use iodised salt in our diet?
Ans: It is advisable to use iodized salt in our diet because iodine is an essential micronutrient required for the synthesis of thyroid hormones. The thyroid gland uses iodine to produce hormones such as thyroxine (T4) and triiodothyronine (T3), which are crucial for regulating metabolism, growth, and development. Iodine deficiency can lead to various health problems, including goitre (enlargement of the thyroid gland), hypothyroidism, and impaired mental and physical development, especially in children. By using iodized salt, which contains a controlled amount of iodine, we can ensure an adequate intake of this essential nutrient and prevent iodine deficiency disorders.
Healthcare and Medicine: Historical developments in healthcare and medicine have dramatically improved human well-being. Innovations such as vaccines, antibiotics, and medical imaging technologies have revolutionized disease prevention, diagnosis, and treatment. Presently, cutting-edge innovations like gene editing, precision medicine, and telemedicine are transforming healthcare by offering personalized treatments, improved accessibility, and remote care options.
Environmental concerns have become increasingly important as we recognize the need to protect and preserve our planet for future generations. This theme encompasses the various issues and challenges related to the environment, highlighting the urgent need for action and innovative solutions
Mathematics is a discipline that influences and benefits us in various aspects of our lives. It provides us with tools and concepts that enable us to understand, solve problems, and make informed decisions.
Practical Everyday Applications: Mathematics is an essential skill in our daily lives. From managing finances, budgeting, and calculating expenses to measuring ingredients for cooking, determining travel distances, or estimating time, mathematical skills help us navigate everyday tasks efficiently and accurately.
Problem-Solving and Critical Thinking: Mathematics develops our problem-solving and critical-thinking abilities. It equips us with logical reasoning, analytical thinking, and the ability to break complex problems into smaller, manageable parts. These skills are transferable and valuable in various fields, including science, engineering, business, and even personal decision-making.
Transportation plays a vital role in connecting people, goods, and ideas across the world. Over the years, advancements in technology and innovation have revolutionized the way we travel and transport goods. The theme of “Transport and Innovation” encompasses the intersection of transportation systems and the innovative technologies that are transforming the industry.
