10th class biology guess paper Punjab Boards 2020

This post has the guess paper of biology being prepared today. It will be updated here at night. You can visit this post again at night. All the guess papers of 10th class are being prepared in pdf form.
Now th guess paper of biology for class 10th in English has been updated here below. You can see the guess paper of biology for all board classes below.

Here are the important short questions of biology class 10th chapterwise
Unit 1:

1. stomata and lenticels
2. functions of the nasal cavity
3. functions of mucus
4. difference between respiration and breathing
5. what is diaphragm
6. trachea
7. symptoms of pneumonia and asthma
8. acute and chronic bronchitis
9. effects of smoking 
10. voice box/bronchus

Unit 2

1. homeostasis and example
2. difference between osmoregulation and thermoregulation
3. pressure filtration
4. tubular secretion
5. glomerulus filtrate
6. lithotripsy
7. renal cortex and renal medulla
8. kidney transplant
9. dialysis
10. kidney stone and its symptoms

Unit 3

1. coordination and names of its types
2. ganglions 
3. spinal cord and its functions
4. components of coordination
5. difference between stimulus and receptor
6. difference between a reflex action and reflex arc
7. somatic and autonomic nervous system 
8. myopia and hypermetropia
9. define hormone and endocrine system
10. pituitary gland and its functions

Unit 4

1. skeleton and endoskeleton 
2. difference between flexer and extensor
3. osteocytes
4. number of bones in the axial and appendicular skeleton
5. types of joins
6. difference between tendons and ligaments
7. what is bone? difference between compact and spongy bone
8. osteoporosis

Unit 5

1. reproduction and its types
2. fragmentation
3. multiple fission
4. parthenocarpy
5. benefits and disadvantages of vegetative propagation
6. endospores
7. pollination, self-pollination and crosss-pollination
8. alternation of generations

Unit 6

1. what is a trait
2. define heredity with example
3. co-dominance and incomplete dominance
4. difference between genotype and phenotype
5. difference between dominant and recessive allele
6. difference between gene and allele
7. artificial and natural selection
8. difference between homozygous and heterozygous allele
9. difference between translation and transcription

Unit  7

1. define ecology and community
2. define ecosystem
3. define mutualism with an example
4. what is acid rain and give its effects
5. predation with examples
6. difference between food chain and food web
7. difference between ecto and endoparasites
8. difference between nitrification and denitrification
9. what is symbiosis

Unit 8

1. What is biotechnology
2. single cell protien
3. what is fermentor and give it advantages
4. purposes of genetic engineering
5. what is recombinant DNA?
6. Define fermentation
7. alcoholic and lactic acid fermentation

Unit 9

1. Define pharmacology and give its relation to pharmacy.
2. vaccine and vaccination 
3. narcotics
4. hallucinogens
5. sedative and its harms
6. difference between analgesics and antibiotic

10th class biology important long questions 2020

1. the osmoregulatory function of the kidney
2. struture and function of nephron with diagram
3. osmoregulation adaptations in plants
4. difference between xerophytes and halophytes
5. difference between hydrophytes and xerophytes
6. write a note on neuron
7. structure of the human eye
8. write a note of forebrain
9. functions of lobes of the cerebrum
10. cartilage and its types
11. type of joints
12. arthritis and its types
13. advantages and disadvantages of vegetative propagation
14. a note on reproductive system of female rabbit
15. conditions for fermentation of seed
16. nitrogen cycle
17. biotic elements of the ecosystem
18. carbon cycle
19. purposes and aims of genetic engineering
20. steps of genetic engineering
21. uses of biotechnology