PSEB 10+1 BIOLOGY SAMPLE PAPER SEPTEMBER EXAM 2024

PSEB 10+1 BIOLOGY SAMPLE PAPER  SEPTEMBER EXAM  2024 

Class-10+1 Paper Biology  M.M. 70 Time: 3 hrs.

(1) Question paper has four parts A,B,C,D with total 17 questions.

(2) Section (A) has question number 1 having 28 parts of 1 marks each. 15 question are MCQ type, 5 fill in thE blanks, and 5 are True/False and 3 questions from comprehension passage. 

(3) Section (B) has question number 2 to 11 total 10 short answer type questions of 2 marks each.

Question 3, 4, 9, 11 have internal choice.

(4) Section (C) has question number 12 to 15 total 4 questions of 3 marks each. Question 14 to 15 have internal choice.

(5) Section (D) has question 16 and 17 total 2 questions of 5 marks each. Both questions have 100% internal choice.

Section - (A)

1.

(1) ICBN stands for:

(a) Indian congress of botanical names 

(b) International code of botanical Nomenlature. 

(c) International congress for biological   names

(d) indian code of botanical nomenclature

(2) Which is correct hierearchical sequence :-

 (a) Phylum, class, order, family

(b) Genus, species, order, family 

(c) Phylum, division, family, class

(d) Division, order, class, genus

(3) Ex-situ conservation includes. 

(a) Botanical gardens 

(b) Seed banks 

(c) Wildlife Safari parks 

(d) All of these 

(4) Which of the following fungi known as sac fungi?

(a) Phycomycetes 

(b) Ascomycetes

(c) Basidiomycetes 

(d) Denteromycetes.

(5) The size of pleuropneumonia like organism (PPLO) is

(a) 0.1 μm.

(b) 0.02 μm

(c) 1-2 μm

(d) 10-20 μm

(6) Evolutionarily the first terrestrial plant to possess vascular tissue are:- 

(a) Bryophytes

(b) Pteridophytes

(c) Cycadales

(d) Gnetales

(7) Lichens represent symbiotic relationship between

(a) Algae and bacteria 

(b) Fungi and higher plants

(c) Algae and fungi

(d) Viruses and bacteria.

(8) Which one of the following sets of animals share a four chambered heart?

(a) Amphibian, Reptiles, Birds 

(b) Crocodiles, Birds, Mammals

(c) Crocodiles, lizards, turtles

(d) Lizards, Mammals, Birds

(9) In which phylum, the body is segmented:

(a) Porifera 

(b) Coelenterata

(c) Annelida

(d) Mollusca

(10) In the monocotyledonous seeds the endosperm is separated from the embryo by a distinct layer known   as:

(a) Testa 

(b) Aleurone layer 

(c) Tegmen 

(d) Scutellum

(11) The term polyadelphous is related to:- 

(a) Gynoecium 

(b) Androecium 

(c) Corolla

(d) Calyx

(12) Cortex is the region found between:

(a) Epidermis and stele 

(b) Pericycle and endodermis 

(c) Endodermis and pith

(d) Endodermis and vascular bundle

(13) Cells with active cell division capacity?

(a) Meristematic tissuE

(b) Parenchyma 

(c) Simple tissue 

(d) Vascular tissues

(14) Powerhouse of the cell is

(a) Golgi bodies 

(b) Mitocondria 

(c) Ribosomes

(d) Endoplasmic reticulum

(15) Amphibians shows:-

(a) Dual habitat nature 

(b) Three chambered 

(c) Moist, scaleless skin

(d) All of these

Fill in the blanks: -

(16) Whitakker's five kingdoms are Monera,------fungi, plantae and-----

(17) In angiosperms ovary ripens into -----------

(18 ) Animals with three primary germial layers are referred to as--------

(19) Primary roots develop from the --------

(20) In -------type of bundle in between xylem and phloem intrafascicular cambium is present.

True or False:-

(21) Root hair are multicellular. 

(22) If both male and female parts present in one flower, it is called unisexual flower. 

(23) Pseudocoel is found in flatworms and roundworms. 

(24) Megaspore on germination produce female gametophyte.

(25) Prokaryotes are organisms without a nucleus.

Comprehension passage:

Flower is a modified shoot and is the reproductive organ in flower plant. A flower has four whols arranged successively Le. calyx, corolla, androecium and gynoecium Caly composed of sepals and corolla composed of petals. Androecium consists of stomensor male reproductive part of flower. Gynoecium is female reproductive part of flower consists of carpels. 

(26) Androecium consist of----

(a) Sepals

(b) Petals

(c) buds

(d) Stamens

(27) Gynoecium consist of--------- 

(a) Carpel

(b) Stamens 

(c) Leaves 

(d) Sepals and petals

(28) Flower is modified shoot for.----- reproduction in plants

(a) Sexual

(b) Asexual

(c ) Vegetative

(d) All of these

Section - (B)

2. Write any two advantages of binomial nomenclature. 

3. What is mycorrhiza?

OR

What are lichens?

4. Name the pigments present in red algae.

OR

What is numerical taxonomy? 

5. Write four salient features of Arthropoda.

6. State four flight adaptations of the birds. 

7. What is perigynous ovary? 

8. What is phyllotaxy? 

9. Name the various components cells of xylem and phloem.

OR

Differentiate cymose and racemose inflorescence.

10. What is periderm?

11. Differentiate between poikilothermal and homeothermal animals. 

OR

How viroids different from viruses.

Section - (C)

12. Draw well labelled diagram of

(a) Bacterial cell (b) Englena 

13. What are the characteristic features of Englenoids?

14. Enlist six characters of class Reptilia. Enlist three examples. 

OR

Describe characteristic features of chordates. 

15. Define the following terms:-

(a) Aestivation   (b) Placentation (c) Superior ovary 

OR

Draw labelled diagram of following: ( a) V.S. of maize seed (b) Gram seed

Section - (D)

16. Define the term inflorescence. Explain the basis for different types inflorescence in flowering plants        

OR 

Describe the anatomical features of monocotyledonous stem. 

17. Differentiate between the following:-

(1) Red algae and brown algae (2) Gymnosperms and angiosperms

OR

(a) What are the modifications that are observed in birds that help them fly? 

(b) All chordates are not vertebrates. Why?