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101.

Consider the sentences a & b. a – Gestation period is different in different organisms. b – The rate of reproduction is more during favourable conditions A) Both ‘a’ & ‘b’ are true B) ‘a’ is true, ‘b’ is falseC) ‘a’ is false, ‘b’ is true D) Both ‘a’ & ‘b’ are false

Answer»

(A) Both ‘a’ & ‘b’ are true

102.

One of the following sentences is not correct about fission A) This occurs in unicellular organism B) Rarely occurs in man C) Fragmentation shows identical characters D) Binary and multiple fission are the types of fissions.

Answer»

(B) Rarely occurs in man

103.

Length of pollen tube exhibits the distance fromA. pollen grain to stigmaB. pollen grain to styleC. pollen grain through the style to the ovuleD. stigma to style

Answer» Correct Answer - C
104.

Pollen grain along with the growing tube has how many haploid nuclei?A. OneB. TwoC. ThreeD. Four

Answer» Correct Answer - 3
105.

Which one of the following is surrounded by a callose wallA. Pollen grainB. Microspore motherC. Male gameD. Egg

Answer» Correct Answer - 2
106.

Unisexuality of flowers preventsA. Geitonogamy, but not xenogarwB. Autogamy and geitonogamyC. Autogamy, but not geitonogamyD. Both geitonogamy and xenogamy

Answer» Correct Answer - 3
107.

Obturators which help in fertilization are out growth ofA. Pollen tubeB. StigmaC. Placenta or funiculusD. Pollen grains

Answer» Correct Answer - 3
108.

The filiform apparatus is present inA. Antipodal cellB. Egg cellC. Secondary nucleusD. Synergids

Answer» Correct Answer - 4
109.

Find out the incorrect sentence regarding fertilisation in fish A) External fertilisation B) Female produces numerous ova C) Male produces only one sperm D) Fertilisation is influenced by nature

Answer»

(C) Male produces only one sperm

110.

Which of the following is not concerned with female reproduction system? A) Ovary B) Fallopian tube C) Leiberhan follicles D) Graffian follicles

Answer»

(C) Leiberhan follicles

111.

Fallopian tube → Uterus. What will be in the box ? A) Ovary B) Graffian follicle C) Cavity of ovule D) Canal

Answer»

(B) Graffian follicle

112.

What does amniotic fluid mean?

Answer»

Amniotic fluid: Protective fluid (liquid) contained by the amniotic sac of a pregnant female.

113.

Placenta is embedded in the ___ wall.

Answer» Correct Answer - uterine
114.

Write the function of Nucleus of human sperm

Answer» Nucleus contains genetic material and has haploid set of chromosomes . It passes on paternal characters to the offspring and helps in maintaining diploid chromosome number in species
115.

The following statements describe the characters of wind-pollinated plants. Which one of these statements is incorrect ? (i)The pollen grains are sticky (ii)Stamens are well exposed (iii)Flowers often have a single ovule

Answer» The pollen grains are sticky
116.

How many pollen sacs are present in a mature antherA. 4B. 1C. 3D. 2

Answer» Correct Answer - 4
117.

What is somatic cells?

Answer»

Somatic cells from the body of the organism whereas germ cells participate in reproduction.

118.

What is Mitosis? Which type of cells it occurs in organisms? Write about the different stages of it.

Answer»

1. Mitosis is a method of cell division, in which the nucleus divides into two daughter nuclei. 

2. Each containing the same number of chromosomes as the parent nucleus. 

3. Mitosis takes place in all body cells which retains same number of chromosomes. 

4. Different stages of mitosis: 

1. Prophase 

2. Metaphase 

3. Anaphase 

4. Telophase

119.

The fluid that is secreted at the end of the gestation period A) ColostrumB) Lymph C) Blood D) Saliva

Answer»

(A) Colostrum

120.

The gestation period in man is ……….. A) 330 days B) 20 days C) 280 months D) 280 days

Answer»

(D) 280 days

121.

What are stamens and carpels?

Answer»

The reproductive parts of a flower which possess the sex cells or germ cells are called stamens and carpels.

122.

Microsporophyll of Angiosperms is known asA. gynoeciumB. AntherC. FilamentD. Stamen

Answer» Correct Answer - 4
123.

In angiosperms, functional megaspore develops intoA. Pollen sacB. Embryo sacC. OvuleD. Endosperm

Answer» Correct Answer - 2
124.

The suspensor in Capsella develops fromA. Apical cellB. Basal cellC. Chalazal cellD. Apical & basal cell both

Answer» Correct Answer - 2
125.

The functional megaspore in Capsella is alwaysA. MicropylarB. ChalazalC. AllD. Any

Answer» Correct Answer - 2
126.

The special features of the endothecium of anther of Capsella :A. Radially elongated cellsB. Thickening of `alpha`-celluloseC. HygroscopicD. All of the above

Answer» Correct Answer - 4
127.

Main function of endothecium (in anther) is :-A. MechanicalB. NutritiveC. DehiscenceD. Storage

Answer» Correct Answer - 3
128.

Endothecium, middle layer and tapetum in anther are derived from :-A. Primary sporogenous cellsB. Primary parietal cellsC. BothD. None of the above

Answer» Correct Answer - 2
129.

Where are sperms produced ?

Answer» Sperms are produced in the testes.
130.

Name the protective coverting of testes .

Answer» Testes are protected by the scrotum.
131.

Which of the following changes occurs during adolescene in boys ?A. Cracking of voiceB. Increase in weightC. Breakage of milk teethD. Incrase in height

Answer» Correct Answer - A::B::D
132.

Which of the following functions are not related to testes ?A. Formation of placentaB. Secretion of male hormoneC. Fromation of male gametesD. Secretion of oestrogen

Answer» Correct Answer - A::D
133.

Sperms from the testis pass throughA. urinary bladderB. Vas deferensC. scrotumD. prostate gland

Answer» Correct Answer - B
134.

Which of the following represents the correct sequence of organs for transport of sperms in man ?A. Urete `to` Testis `to` UrethraB. Vas deferens `to` Urethra `to` TestisC. Testis ` to` Vas deferns `to` UrethraD. Testic `to` Ureter `to` Urethra

Answer» Correct Answer - C
135.

The ____ forms a common passage for both the sperms and urine.

Answer» Correct Answer - urethra
136.

Describe the parts of a sperm .

Answer» The sperm has a head and a tail.
137.

How cotyledons are useful for the plant?

Answer»

1. The cotyledons digest and absorb the endosperm. 

2. They make the stored food available for the growth of the epicotyl and hypocotyl. 

3. The cotyledons of some flowering plants, digest, absorb, and store the foods from the endosperm as the ovule is maturing into a seed. Eg: beans

4. As a consequence, the cotyledons become greatly enlarged because of stored food and the endosperm disappears more or less completely.

138.

Cotyledons are present in A) Stamens B) Ovary C) OvuleD) Seeds

Answer»

Cotyledons are present in seeds

139.

The parts of flower useful even after fertilisation A) Ovule B) Androecium C) Style, Stigma D) Calyx

Answer»

Answer is (A) Ovule

140.

This part indicates future root in matured embryo A) Plumule B) Radicle C) Chalaza D) Cotyledons

Answer»

Answer is (B) Radicle

141.

The plant that propagates through root cuttings A) Rose B) Carrot C) Mango D) Hibiscus

Answer»

Answer is (B) Carrot

142.

Food is stored in albuminous seed inA. TestaB. PlumuleC. CotyledonD. Endosperm

Answer» Correct Answer - 4
143.

Double fertilization is a characteristic ofA. Only angiospermB. Angiosperm and gymnospermC. Gymnosperm and pteridophyteD. Angiosperm and pteridophyte

Answer» Correct Answer - 1
144.

What is the ploidy of primary endosperm nucleus (PEN) in angiospenn ?A. HaploidB. DiploidC. TriploidD. Tetraploid

Answer» Correct Answer - 3
145.

What is applicable with respect to the Fallopian tube ?A. The embryo is implanted here.B. It is ligated in vasectomyC. Fertilization occurs here.D. Oestrogen is secreated from here.

Answer» Correct Answer - C
146.

What is fertilisation?

Answer»

Union of male and female gametes is known as fertilisation.

147.

In which plants leaf is known as Sporophyll? Why?

Answer»

In fern plants leaf is known as Sporophyll. Because on the lower surface of the leaf sporangia are present.

148.

The egg is caried from the ovary to the womb through___

Answer» Fallopian tube
149.

In what way the sexually transmitted diseases spread from person to person?

Answer»

Sexually transmitted diseases spread by unsafe sexual contacts, using infected devices, infected blood transfusion, from an infected mother to child.

150.

Which of these is not a sexually transmitted diseasesA. AIDSB. syphillisC. typhoidD. gonorrhoea

Answer» Correct Answer - C