y
og
ol
Bi
Please check the examination details below before entering your candidate information
SE
Candidate surname Other names
GC
l
22 ce
Centre Number Candidate Number
20 dex
E
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Paper
Time 1 hour 45 minutes
reference 1BI0/1H
Biology
PAPER 1
Higher tier
You must have: Total Marks
Ruler, calculator
Instructions
• Fill
Use black ink or ball-point pen.
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 100.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• structure
In questions marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related
or follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end.
Turn over
*P69319A0128*
P69319A
©2022 Pearson Education Ltd.
Q:1/1/1/1/1/
, y
og
ol
Bi
SE
Answer ALL questions. Write your answers in the spaces provided.
GC
l
22 ce
Some questions must be answered with a cross in a box . If you change your mind about an
20 dex
answer, put a line through the box and then mark your new answer with a cross .
E
1 Gregor Mendel studied inheritance in pea plants.
Pea plants can produce either yellow pea pods or green pea pods.
Mendel crossed plants that always produce yellow pea pods with plants that always
produce green pea pods.
Symbol A represents the dominant allele.
Symbol a represents the recessive allele.
(a) Which is the genotype of the pea pods produced from this cross?
(1)
A AA
B aa
C Aa
D YG
(b) (i) Mendel grew many plants from the seeds in these pea pods.
These plants were then crossed with each other.
The seeds from this second cross produced 5 496 plants with yellow pea pods
and 1 832 plants with green pea pods.
Give this as a ratio in its simplest form.
(1)
ratio ......................... ............... . . . . . . . . . . . . . . . . . . . . . .
2
*P69319A0228*
, y
og
ol
Bi
SE
(ii) Complete the Punnett square to show the outcome of a cross where both
GC
parent pea plants are heterozygous.
l
22 ce
20 dex
Show the percentage probability of homozygous recessive offspring in
E
your answer.
(3)
percentage probability of homozygous recessive offspring ............................................... . . . . . . . . . . . . . . . %
(c) (i) Some plants reproduce sexually.
Give one advantage of this type of reproduction.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... ................ . . . . . . . . . . . . . . . . . . . .
(ii) Name the process that forms gametes for sexual reproduction.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... ................ . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 7 marks)
*P69319A0328*
3
Turn over
og
ol
Bi
Please check the examination details below before entering your candidate information
SE
Candidate surname Other names
GC
l
22 ce
Centre Number Candidate Number
20 dex
E
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Paper
Time 1 hour 45 minutes
reference 1BI0/1H
Biology
PAPER 1
Higher tier
You must have: Total Marks
Ruler, calculator
Instructions
• Fill
Use black ink or ball-point pen.
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 100.
• The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• structure
In questions marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related
or follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end.
Turn over
*P69319A0128*
P69319A
©2022 Pearson Education Ltd.
Q:1/1/1/1/1/
, y
og
ol
Bi
SE
Answer ALL questions. Write your answers in the spaces provided.
GC
l
22 ce
Some questions must be answered with a cross in a box . If you change your mind about an
20 dex
answer, put a line through the box and then mark your new answer with a cross .
E
1 Gregor Mendel studied inheritance in pea plants.
Pea plants can produce either yellow pea pods or green pea pods.
Mendel crossed plants that always produce yellow pea pods with plants that always
produce green pea pods.
Symbol A represents the dominant allele.
Symbol a represents the recessive allele.
(a) Which is the genotype of the pea pods produced from this cross?
(1)
A AA
B aa
C Aa
D YG
(b) (i) Mendel grew many plants from the seeds in these pea pods.
These plants were then crossed with each other.
The seeds from this second cross produced 5 496 plants with yellow pea pods
and 1 832 plants with green pea pods.
Give this as a ratio in its simplest form.
(1)
ratio ......................... ............... . . . . . . . . . . . . . . . . . . . . . .
2
*P69319A0228*
, y
og
ol
Bi
SE
(ii) Complete the Punnett square to show the outcome of a cross where both
GC
parent pea plants are heterozygous.
l
22 ce
20 dex
Show the percentage probability of homozygous recessive offspring in
E
your answer.
(3)
percentage probability of homozygous recessive offspring ............................................... . . . . . . . . . . . . . . . %
(c) (i) Some plants reproduce sexually.
Give one advantage of this type of reproduction.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... ................ . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... ................ . . . . . . . . . . . . . . . . . . . .
(ii) Name the process that forms gametes for sexual reproduction.
(1)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... ................ . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 7 marks)
*P69319A0328*
3
Turn over
