Entomology is the scientific study of insects. It involves the examination of the biology, behavior, ecology, taxonomy, physiology, and evolution of insects. Entomologists, the scientists who specialize in this field, study a vast and diverse group of organisms, which make up the largest class of animals on Earth. The knowledge gained through entomology has wide-ranging applications, from understanding ecosystems and biodiversity to pest management and forensic entomology.

The first antibiotic discovered by Alexander Fleming in 1928 was:

(A) Penicillin

Alexander Fleming's discovery of penicillin revolutionized medicine by introducing the first widely used antibiotic, which proved effective against a variety of bacterial infections.

The tissue that forms glands is:

(A) Epithelium

Explanation:

Epithelial tissue is responsible for the formation of glands. Glands are structures that produce and secrete substances such as hormones or enzymes. Epithelial cells can be organized to form glandular tissues, and glands can be classified into two main types: exocrine glands and endocrine glands. Exocrine glands release their secretions through ducts, while endocrine glands release hormones directly into the bloodstream. Epithelial tissue plays a crucial role in the formation and function of both types of glands.

Cartilage is not found in:

(C) in the kidney

Explanation:

Cartilage is a connective tissue that is flexible and provides support to various structures in the body. However, it is not found in the kidney. The kidney primarily consists of renal tissue, blood vessels, and other specialized structures involved in the filtration of blood and the formation of urine. Cartilage is commonly found in areas such as the nose, ears, joints, and certain respiratory structures, but it is not a component of the kidney.

The term "overdose" in the context of essential elements for plants suggests an excess or imbalance of nutrients, which can have negative effects on plant health. Among the options given:

(A) Nitrogen

Explanation: While all nutrients are essential for plant growth, an overdose or excessive application of nitrogen (option A) can lead to problems such as nutrient imbalance, environmental pollution, and increased susceptibility to certain diseases. Excessive nitrogen can cause rapid vegetative growth, but it may negatively impact other aspects of plant health, such as root development, flowering, and overall resilience.

Balanced nutrient management is crucial for optimal plant growth, and it's important to consider the specific requirements of each plant species and the soil conditions to avoid nutrient imbalances and potential negative effects on plant health.

The different breeds mentioned—Gir, Sahiwal, and Lal Singhi—are associated with:

(A) Cow

Explanation:

Gir, Sahiwal, and Lal Singhi are breeds of cows (cattle). These breeds are known for their distinct characteristics, including milk production, adaptability to specific environments, and other traits that make them well-suited for various agricultural purposes. Therefore, the correct answer is (A) Cow.

The social animal among the options is:

(A) Bee

Explanation:

Bees are known for their highly organized and social behavior. They live in colonies where individuals have specific roles such as workers, drones, and a queen. They communicate with each other, work together for the common good of the colony, and have a complex social structure. In contrast, mosquitoes, bur (assuming it refers to burrowing animals), and domestic flies are not typically considered social animals in the same way as bees. Bees, especially honeybees, are well-known for their intricate social organization and cooperation within the colony.

The option that represents a foreign breed of bird known for its capacity to lay more eggs is:

(A) White Leghorn

Explanation:

White Leghorn is a breed of chicken that originated in Italy but is widely used in many countries, including as a popular egg-laying breed in poultry farming. Leghorns are known for their prolific egg production, making them a common choice for commercial egg production.

The other options:

Broiler refers to chickens raised for meat.

White Cornish is a breed known for its meat qualities.

"New Hemisphere" does not appear to refer to a specific poultry breed.

So, the correct answer is (A) White Leghorn.