CBSE Class X – Science Biology Exam ( Full Syllabus)

All ofsprings of F1 generation were tall with round seeds which shows that both Tallness and round seed are dominant traits. However, new combinations were seen in F2 generation which showed that the tall/ short trait and the round/wrinkled seed trait are independently inherited

Hormones and enzymes are proteins, and the formation of any specific protein is controlled by a particular gene. Fat biosynthesis occurs through metabolic reaction.

The wings of an insect and a bird have distinct structures but they carry out the same function of fying. Therefore, they are analogous organs

Asexual reproduction will not result in variation as there are no gametes involved. Movement of individuals from one habitat to another will not afect the DNA.

Tall plants having round seeds as well as dwarf plants with wrinkled seeds. There were also new combinations like tall plants with wrinkled seeds and dwarf plants with round seeds in the F2 progeny.

The sex of the children will be determined by what they inherit from their father. A child who inherits an X chromosome from her father will be a girl and the one who inherits a Y chromosome from him will be a boy

The tendril of a pea plant and the phylloclade of Opuntia are homologous structures, as they are modifed stems but serve diferent functions in diferent plants.

Repeated division of an organism to produce many daughter cells simultaneously.

Budding in which a bud arises from a particular region on a parent body. And after detaching from the parent body the bud grows into a new independent individual

The gametes are reproductive cells. They contain only half the number of chromosomes as compared to the normal cells.

Reproduction is one of the important characteristic function of living things. it is essential for the continuity of species for generations to continue.

Unisexual flowers contains only one reproductive organ, either male or female.

Pseudopodia are developed in amoeba. Amoeba engulfs its food particles by forming pseudopodia around it. The food particle gets surrounded by encircling pseudopodia’s tips.

Rice water contains starch, hence when iodine solution is added to rice water it turns blue-black.

Small intestine receives Juices from liver, pancreas and walls of small intestine. Bile Juice from liver emulsifes the fats and makes the medium alkaline. Pancreas and small intestine Juices contain amylase, lipase and tryspin

Among the given options, Amoeba (binary fssion), Yeast (budding) and banana (vegetative propagation) reproduce by asexual reproduction whereas dogs reproduce by sexual method.

Steps of photosynthesis are as follows: (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates.