Tes Online - Soal IPA Semester 1 Kelas 4 Sd (Pilihan Ganda)

Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen. This process occurs in the chloroplasts of plant cells, which are primarily found in the leaves. The leaves have specialized structures called stomata, which allow for the exchange of gases necessary for photosynthesis. Additionally, the leaves have a large surface area that maximizes the absorption of sunlight. Therefore, it is in the leaves where the majority of photosynthesis takes place.

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Daun adalah bagian tumbuhan yang paling umum atau sering dijadikan sebagai makanan hewan. Hal ini karena daun mengandung banyak nutrisi dan serat yang dibutuhkan oleh hewan untuk pertumbuhan dan perkembangan mereka. Selain itu, daun juga merupakan bagian tumbuhan yang mudah dijangkau dan dapat ditemukan dengan mudah di alam.

Rematik adalah penyakit yang menyebabkan rasa nyeri pada persendian. Penyakit ini umumnya terjadi akibat peradangan pada sendi, yang dapat disebabkan oleh berbagai faktor seperti infeksi, gangguan autoimun, atau penuaan. Gejala rematik meliputi nyeri, kaku, dan pembengkakan pada sendi yang terkena. Osteoporosis adalah kondisi di mana tulang menjadi rapuh dan rentan patah, sedangkan polio dan rakitis adalah penyakit yang tidak berhubungan dengan nyeri pada persendian.

Mutualisme adalah hubungan antara dua makhluk hidup yang saling menguntungkan. Dalam hubungan mutualisme, kedua makhluk tersebut saling membantu satu sama lain untuk mendapatkan keuntungan. Contohnya, hubungan mutualisme antara lebah dan bunga, dimana lebah mendapatkan nektar dari bunga sebagai makanan, sementara bunga mendapatkan bantuan dalam penyerbukan dari lebah.

The correct answer is "serabut." This suggests that the roots of paddy, corn, and coconut plants are fibrous in nature.

The given answer is correct because kunyit (turmeric), jahe (ginger), and akar cimplukan (Ciplukan root) are all examples of plant roots that are used in traditional medicine. These roots have medicinal properties and are commonly used in various herbal remedies for their health benefits.

The correct answer is "pipih" because the question is asking for the shape of the shoulder blade bone (tulang belikat). The word "pipih" means flat, which accurately describes the shape of the shoulder blade bone.

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Rambut akar berfungsi untuk mencari jalan di antara butiran tanah sehingga akar dapat menembus masuk ke dalam tanah. Rambut akar ini berupa serabut-serabut halus yang tumbuh di ujung-ujung akar dan berfungsi untuk menyerap air dan nutrisi dari tanah. Dengan adanya rambut akar, akar dapat menembus dan menjelajahi tanah dengan lebih efektif untuk mendapatkan sumber-sumber kehidupan yang diperlukan.

The explanation for the correct answer, "sendi pelana," is that this type of joint allows movement in two directions, similar to how a saddle allows a horse to move in different directions. In the human hand, the joint between the wrist bones and the base of the thumb is a saddle joint, enabling a wide range of movements and allowing the thumb to oppose the other fingers. This type of joint is characterized by its concave and convex surfaces, which fit together like a saddle, hence the name "sendi pelana" or saddle joint.

The correct answer is "alis mata" (eyebrows). Eyebrows play a role in preventing sweat from entering the eyes by acting as a barrier. They help to divert sweat away from the eyes and also help to protect the eyes from dust and debris.

The correct answer is "Ibu Jari" because the term "sendi engsel" refers to a hinge joint, which is found in the thumb. The thumb joint allows for flexion and extension movements, similar to how a hinge operates. Therefore, the hinge joint is located in the thumb or "Ibu Jari" in Indonesian.

The correct answer is hipodermis. The hipodermis is the layer of skin that contains a lot of fatty tissue, which is useful for insulating and warming the body. It is the innermost layer of the skin and is responsible for storing fat, providing cushioning, and regulating body temperature.

The correct answer is "daur hidup". Daur hidup refers to the continuous stages that living organisms go through, including birth, growth, reproduction, and death. It encompasses the entire life cycle of an organism, from its beginning to its end.

The correct answer is gadung, uwi, dan sirih. These plants have leaves with curved veins.