30 Questions
In the given material 'B', which stage of mitosis involves the disintegration of nuclear membrane and nucleolus?
Prophase
What is the formula to calculate the percentage of pollen germination?
𝑛×100/𝑁
Which stain is used for the temporary slide preparation of Onion peel?
Acetocarmine stain
What is the number of locules in the material with pentalocular placentation?
5
What happens to the chromatin in the Prophase stage of mitosis?
It becomes condensed into chromosomes
What happens to the chromosomes in the Metaphase stage of mitosis?
They are arranged on the equatorial plane of the cell
During which phase of the cell cycle do two sister chromatids of each chromosome separate due to the splitting of centromere?
Anaphase
What is the process called when daughter chromosomes reach the opposite poles and uncoil to form chromatin fibres?
Telophase
Which condition is characterized by affected individuals inheriting alleles from both parents, expressing in both males and females in equal proportion, and showing a skipping of generations for the trait?
Autosomal recessive inheritance
Which type of inheritance is characterized by the trait being transmitted from either father or mother, expressed in every generation, and equally expressed in males and females?
Autosomal dominant
Identify the given specimen as T.S of which structure that consists of 250 compartments called testicular lobules, each containing 3 seminiferous tubules and Leydig cells?
Mammalian testis
In which type of inheritance is the trait expressed in males only and always transmitted from father to son?
Y-linked inheritance
Identify the given specimen as V.S of which structure that externally covers zona pellucida with trophoblast and internally has inner cell mass with blastocoel fluid-filled cavity?
Mammalian blastocyst
Identify the given specimen as T.S of which structure that externally covered by germinal epithelial cell layer and has follicles of different stages?
Mammalian ovary
What does the given specimen 'E' represent?
Entamoeba histolytica
What is the formula to calculate the percentage of pollen germination?
$$n\times100/N$$
Which stain is used for the temporary slide preparation of Onion peel?
Acetocaramine stain
What happens to the chromosomes in the Metaphase stage of mitosis?
Chromosomes are thick and arranged on the equatorial plane of the cell
What is the number of locules in the material with pentalocular placentation?
5
During which phase of the cell cycle do two sister chromatids of each chromosome separate due to the splitting of centromere?
Anaphase
What happens to the daughter chromosomes in the Anaphase stage of mitosis?
They separate due to the splitting of centromere and move towards the opposite poles
Which condition is characterized by affected individuals inheriting alleles from both parents, expressing in both males and females in equal proportion, and showing a skipping of generations for the trait?
Autosomal Recessive Inheritance
During which phase of the cell cycle do the daughter chromosomes reach the opposite poles and uncoil to form chromatin fibres?
Telophase
Which type of inheritance is characterized by the trait being expressed in males only and always transmitted from father to son?
Y-linked Inheritance
What does the given specimen 'E' represent?
Mammalian Blastocyst
In which stage of mitosis do the daughter chromosomes appear V, J, L, and I shaped depending upon the position of the centromere?
Anaphase
What is the correct name for 250 compartments called testicular lobules found in a male gonad?
Seminiferous Tubules
Which type of inheritance is characterized by the trait being transmitted from either father or mother, expressed in every generation, and equally expressed in males and females?
Autosomal Dominant Inheritance
What is the term for the process where a Graffian follicle ruptures to release an ovum?
Ovulation
What are the cells called that are found towards chalaza end in a female gametophyte and are known as antipodals?
Polar Cell
Prepare for the PUC 2nd year biology practical examination pattern for 2024 with questions related to slide preparation, calculation, and reporting. Practice calculating the percentage of pollen germination and preparing a report based on observations.
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